After Walter takes up origami as a martial art, Dennis scoffs and comes up with his own martial art, and so the two prepare to battle it out.
Dennis tries to launch a rocket to explore the galaxy. When his first attempt fails, Dennis is inspired by the mayor's call to make Beanotown Green-o-town and tries other fuel sources to launch his space mission. Dennis's seemingly maniacal commitment to the eco-drive earns him an award from the mayor, but just as Dennis's contribution is about to be recorded, the whole of Beanotown discover what Dennis has really been up to, with explosive results!
Mum has bought curtain material for the soon to be newly decorated kitchen, and asks Dad to look after it while she is out. However, Dad falls asleep and mistakenly agrees that Dennis can use it as a giant sail. When Dad realises that it has gone, he calls Dennis to bring it back, but unfortunately Dennis gets into a spot of bother with the colonel, who takes the curtain material off Dennis. In an attempt to steal it back, the garden being wrecked and the kitchen is left looking like a bombsite. Dennis, Gnasher and Dad have to clean up the whole kitchen and redecorate it in time for Mum returning. When Mum decides it is time to hang the new curtains, Dennis is about to get the curtain material, but Mum reveals that she has changed her mind and bought new curtains instead.
It is a scorching hot day in Beanotown. Walter and his friends are enjoying themselves in Walter's new swimming pool, but Dennis and his friends cannot join in. Sergeant Slipper comes past and tells them that they cannot play with water today because there is a water shortage. Hot and wanting their own pool, Dennis and his friends decide to dig one in Dennis's backyard and figure out how to fill it later. Their digging leads them to find the old drains of Beanotown. In their exploration and hunt for water, they end up being chased by Slipper, and releasing the overflow of Beanotown Lake. The water flows right through the drains and fills the hole in Dennis's garden, giving the boys the swimming pool they wanted.
Mum is clearing out the house and orders Dennis to pack up some old junk and then clean his room. During the cleaning, Dennis comes across a bundle of objects that inspire him to be a private investigator. Gran comes round to see if she can find one of her old teapots as she needs it for a date with a gentleman later on that day, so Dennis takes up the missing teapot as his first case. Starting off their trail by searching the town for the teapot, Dennis and Gnasher go back to the crime scene to investigate, and just as Gran has given up hope of finding the teapot in time for her date, Dennis sees Dad with the teapot. Gran rushes towards it and drops it. Dennis is devastated that it is smashed, but Gran reveals that it was what was inside the teapot that mattered most—her extra special set of diamond encrusted false teeth, found just in time for the arrival of her date.
The fair comes to Beanotown and Dennis is desperate to go, but Mum needs him to take care of little sister Bea whilst she attends her relaxation class. Taking Bea with him, Dennis arrives at the fairground, only to discover that the fair's owners, recalling the chaos he and his friends caused last year, have put 'safety' measures in place which prevent Dennis, Curly, Pieface and Bea from having any kind of fun. Bea threatens to do a poo unless she gets to go on the bouncy castle, so Dennis takes advantage of the operator's tea break and fills the bouncy castle for Bea, unaware that he has used helium by mistake. Caught in the act they flee the scene, only for Dennis to discover that Bea has climbed aboard the now airborne castle. Dennis and Gnasher, Curly and Pieface execute a daring plan to save Bea, but ruins the bouncy castle in the process, landing Dennis in trouble again.
After watching a film about an alien invasion, Dennis, Curly and Pie Face decide to make their own film. However, Walter stumbles across them filming, and he only sees the action, not the camera. Filming what he sees on his mobile phone, he runs to tell the whole of Beanotown about the alien invasion. As panic spreads, Dennis and his friends discover the chaos and decide to keep filming in order to help make the best of their own alien film. Meanwhile, Sergeant Slipper investigates the alien landing that Walter has seen, and discovers the truth—that the spaceship is a playhouse with glow sticks in it.
The joke shop owner, Mr Har Har, needs Dennis's help to persuade his mother not to close the joke shop down. The gang decides to try and pass Mr Har Har off as a successful vet.
With one backstage pass for a Ratbucket gig, Dennis and his friends pass themselves off as Ratbucket, only for the real Ratbucket not to be able to play at his own concert.
Determined to teach his son how to behave more like a grown up, Dad forces Dennis to accompany him to his school reunion party. Dad dresses in traditional school uniform as per the invitation's instructions, but he has been tricked by Walter's dad—all the other guests are in formal party wear. Outraged that Dad has been humiliated, Dennis urges him to take action. Joining forces in their revenge, Dennis discovers Dad has a prankster side he has never seen before, as his father shows everyone who the real menace of Beanotown School is.
Visiting Gran in hospital, Dennis has to sneak Gnasher in under the nose of hospital security. Disguising Gnasher as a baby to evade detection, Dennis can only look on as his dog is taken home by the short-sighted Mr and Mrs Butcher. It is up to Dennis and his friends Curly and Pie Face to rescue Gnasher, but this turns out to be bigger challenge than they expected.
After Dennis breaks his bike, Dad is unable to afford a new one, so Dennis convinces him to ask his boss for a raise. Unfortunately, Mr Scrimp reduces his wages instead. Dennis then trashes his house to convince Scrimp that his family are poor, so that Mr Scrimp will feel compelled to raise Dad's wages. Just as Scrimp has been taken in by Dennis' plan, Mum and Dad arrive home laden with shopping bags, resulting in Dad getting fired on the spot. Dennis resolves to get Dad his old job back by secretly causing chaos at his office. To restore order Scrimp rehires Dad, sealing the deal with a generous pay rise. Mum and Dad repair the house, but still don't have enough money to buy Dennis a new bike, instead it gets repaired with Dad's office rubber bands and paperclips.
After another failed attempt to catch Dennis when he is causing trouble, Sergeant Slipper's job is on the line. Slipper's boss hires a super-efficient cop called Boot to replace him, which apprehends most of the residents of Beanotown for the most insignificant of actions and sets out to ban all modes of fun for everyone else. Teamed with Walter, Dennis plans to ensure that Slipper keeps his job and Beanotown returns to normal.
When Gnipper is imprisoned in Beanotown dog pound, Dennis sets up a dramatic plan to rescue him by sending Gnasher into the dog pound under false pretences. However, when Gnasher does not come home with Gnipper, Dennis takes it upon himself to rescue them both by posing as a misbehaving dog. Dennis is seized and sent to the dog pound, where he realises exactly why Gnipper and Gnasher have not come home—the dog pound is a dog palace where all the pampered dogs get whatever they want. After spotting Dennis, Gnasher is ecstatic to be reunited but trouble arises when the kennel warden arrives. She loves Gnasher, and does not want to see him taken away. Despite the sausages on offer, Gnasher makes his choice clear, and together, the three of them escape from the kennel to go home.
When Dennis breaks his skateboard again, Dad agrees to buy Dennis the best skateboard there is as a replacement if he is able to win a prize at the upcoming school award ceremony. At this late stage, the only prize that Dennis has a chance of winning is the best behaviour prize, so he does everything he can to win the contest. When Walter is ruled out for knocking over the guest speaker, Dennis looks certain to win—until Gnasher escapes from the house and follows Dennis to school, where there is a reception full of food. After chaos ensues, there seemed no chance of winning the best behaviour prize but Mr Guff finds the day's events so funny that he awards Dennis a special prize for outstanding individual achievement. Dennis gets his prize and earns his new skateboard.
After a bet from Walter on the Dance Contest, Dennis trains Pie Face to be a dancer. Meanwhile, Dennis' dad tries to cure Gnasher of his fleas.
In an attempt to reclaim the park, Dennis and friends try to scare everyone with a 'pond monster.'
Dennis tries to get a birthday present by saying thank you to his relatives. However, because of Dennis' naughty personality, they take his attempts in a negative way.
Dennis and friends have a go at catching the Legendary Beanotown Pike, but when Walter hears about it, the game is on.
Mum is going to the yoga school and leaves Dad in charge. During her absence, Dennis, Curly and Pie Face try to make a pie, with disasterous results to follow.
To get his friends back from Walter's group, Dennis challenges Walter to a videogames battle.
After a wrestling accident, Gnasher swallows a canister of laughing gas at the vet's. Dennis, along with Gnasher hide in the conference centre, where dad gives a speech. However, the canister leaks, causing Gnasher to fart laughing gas and having everyone laughing.
For a school project, Dennis and Walter both build robots. However, during an accident, both robots merge, causing Dennis and Walter to defend the school.
During a camping holiday, Dennis, Gnasher and Dad meet Terry Tuff and get challenged to a nature survivor's challenge, ending with a race to the summit of Mount Beano.
Dennis and Co. have to control Pie Face's obsession with pies during the Pie Festival. Otherwise, they will be grounded.
To win a football match against Dennis' team, Walter fattens Gnasher up and brings in top striker David Peckham. But will this stop Dennis and team from winning?
On a school trip, Dennis finds out that he is descentant to a warrior tribe. He also discovers that Montanna Smith (a famous Indiana Jones-esque explorer and one of Walter's personal heroes) is actually a thief who's trying to steal the treasure of Dennis' ancestor. Will he be stopped before he gets his hands on the treasure?
Athena gets Gnasher envy when seeing a pampered version of Gnasher in a magazine and when she hears that Dennis owns an Abyssinian wire-haired tripe hound (Gnasher), she wants him. However, being an owner to Gnasher isn't all cracked up to be!
Dennis tries to get a first aid badge to get into a wrestling match. However, Walter's the judge and it's not going to be easy.
Dennis is made to attend a Neighbourhood Watch meeting by his parents. This, however clashes with a jam session with Curly and Pie Face.
Dennis breaks Bea's toy horse, so Dennis is searching for a new one to cheer her up.
Dennis is grounded on the first day of the summer holidays, but Dennis doesn't manage to stomach it. But the town isn't having him sneaking out of home.
Gnasher and Gnipper enter a dog show, regardless of Walter saying they don't have true talent. He wants Athena and Miss Mini Wuff to win, but Walter has just underestimated Gnasher's true capabilities.
To have Dennis be kind to him, Walter disguises as fortune teller Madam Gigi to warn Dennis that if Walter gets hurt, he "will get his just dessert."
There's a new computer system which keeps data for the school which works using a memory stick. This gives Dennis an idea, but it makes Walter suspicious.
Gran's hurt her foot after trying to build a pigsty for her pet pig, Harley. She makes Dennis deal with Harley and then starts living in Dennis' tree house and Dennis isn't happy about it!
Walter applies for work experience at Scrimp Towers, where Dennis' dad works. Dennis tries to help dad with the work and save his job from Walter after an accident.
Dad gets promoted, which means his new job will involve his family moving to Drainotown, much to Dennis' disappointment, so he tries to change dad's mind and stay in Beanotown.
Dennis plays a prank on the citizens of Beanotown, causing them to evacuate, which causes trouble for Dennis later.
Dennis gets a new amplifier but doesn't have a chance to try it out because of Bea's demands and threats to let off a lethal fart if not done so he decides to hide the beans. However, Bea retaliates by stealing the volume knob off the amplifier.
To avoid getting into trouble, Dennis acts ill, leading him into a boring night in the hospital.
Dennis builds a BMX track near Athena's VIP party. However, Athena is standing for none of it.
Dennis gets a case of the hiccups from Mr. Har Har's can-o-giggles and is looking for a way to cure them ready for a film premier.
Dennis' parents hire Nanny Moonbeam, a hippy who has an unusual and peaceful way of curing Dennis' bad behaviour. However, it gets on his nerves and eventually drives his parents up the wall.
Dennis tries to please mum by behaving for the whole day. But this isn't easy for him.
Dennis and Gnasher are on a mission to find Walter's pet rabbit after Gnasher scares it away.
The garden is accidentaly wrecked when Dennis tries to give Gnasher a bath, so the gang have to fix the mess before Mum comes home.
After hearing reports about a bat creature in Beanotown, Dennis highly suspects that The Colonel is a vampire.
Curly doesn't attend band practice and Dennis finds out that this is because of a plan by Walter to sabotage the Dinmakers, involving a collectible series.
An accident happens at school and Mrs Creecher says that she will tell Dennis' parents about it at the school parent's evening. Dennis, Curly and Pie Face set up a scheme to stop this from happening.
Dennis, his friends and Walter's friends get marooned on a desert island when Dennis attempts to escape a boring field trip.
Dennis makes a line of practical jokes for Mr. Scrimp, called 'The Menace Collection.' However, Dennis soon learns that it will put Mr. Har Har out of business.
With the help of some suspicious ancient deeds Walter seizes Dennis' treehouse and claims it for his own. Dennis and co smell a rat - but they must first outsmart their own booby traps and break in to the impenetrable treehouse to rightfully claim it back.
Dennis is consigned to a day of hard labour stacking logs as punishment for pranking the Colonel during the holidays. He soon shows his fortitude and finds a way to menace up the chore into something more fun for himself and all his classmates... much to the Colonel's misery!
Beanotown's latest arrival is Dennis and Gnasher's nutty neighbour's greatest rival. The Colonel's always been a magpie for medals, but has he met his match? Anyone who can transform Dennis and his gang from organised chaos into organised military menaces deserves every medal going... or does he? A tale of rank stupidity!
Mr De Testa has installed the Confiscat-inator - a state of the art security system for contraband confiscated in class - password encoded and set to be locked tight until 2050! Dennis decides there's only one thing for it - they're going to have to bust open the vault. He knows just the menaces for the job... but someone has to crack the complicated mathematical code - and the only man for the job is Walter. If Dennis can get him to join the gang, then Beanotown school is about to witness the biggest heist it's ever seen.
Mr De Testa has installed the Confiscat-inator - a state of the art security system for contraband confiscated in class - password encoded and set to be locked tight until 2050! Dennis decides there's only one thing for it - they're going to have to bust open the vault. He knows just the menaces for the job... but someone has to crack the complicated mathematical code - and the only man for the job is Walter. If Dennis can get him to join the gang, then Beanotown school is about to witness the biggest heist it's ever seen.
Dennis spreads the word around Beanotown that he is planning the ultimate prank. Walter, Slipper and the Colonel devise a spy network to stop him, but, increasingly infuriated by Dennis' inaction, their spy antics escalate to fever pitch, backfiring on each of them as Dennis sits back and watches the chaos unfold.
After a pogo-stick palaver in gym class, Mrs Creecher decides Beanotown ain't big enough for her and Dennis, and calls it a day. Surely a result for Dennis and his trusty pals - substitute teachers are always a pushover! Little does he know Mr De Testa has lined up the one person who Dennis can't outsmart - his very own Mum! How can he possibly convince Mrs Creecher to come back? And will he ever live this down?
Dennis borrows his Dad's new hair restorer to use as ammo in his super soaker for a typical day of pranking at the Zoo and ends up turning the whole town into one big, bad hair day - including Dad, who is mistaken for a gorilla and whisked off to Beanotown Zoo! The menaces need to find a cure for the hyperactive hair follicles, and quick.
Dennis & The Din Makers go on a whistle stop tour of Beanotown, with a special gig planned to rock The Annual Beanotown Jurassic Model Competition - and ruin it for Walter! After failing to impress Gran with their din, she lends them a mythical amp of her own - with a word of warning, which the menaces ignore... and end up creating a sound wave so epic, it literally rocks Beanotown and its residents! The menaces will have to think quickly, and enlist some rather unusual tools, to disarm the legendary Megasonic 20k before any permanent damage is done.
Dennis hears a pest exterminator is inspecting the school and decides to have a little fun, menacing up a highly convincing Giant Ant costume for Gnasher - so convincing, in fact, that the exterminator shuts down the school for a whole day! Beanotown should be their oyster, as they take full advantage of the Giant Ant's ability to clear the streets - but the exterminator is not so easily deterred, and is quickly on their trail with a secret weapon of his own.
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. A shadowy government agency have managed to make a copy of Gnasher's legendary teeth in order to develop The Gnashinator - a top secret super weapon of epic proportions. But they have bitten off more than they can chew - and soon Beanotown is in tatters... there's only one master of Gnasher's gnashers - and that's Gnasher himself.
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. Dennis is left in charge of looking after the school's pet parrot, Polygon, for the weekend, which he promptly trains to menace Walter with water bombs. When Dennis and co nip home for some dinner and leave Gnasher in charge, Walter sneaks in and sets the parrot free... this doesn't look good for our troublesome twosome! Dennis goes to school with a heavy heart the next day to own up... or will Polygon swoop in to the rescue?
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. After a prank misfires and puts the school cook out of action, Dennis and co go undercover to give the pupils a day of school dinners they will never forget - only the headmaster, half a tonne of hyperactive lobsters and a school inspector who looks suspiciously like Walter stand in their way.
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. Dennis and co race against time (and specially appointed playground patrol guards Walter and co) to escape detention, in order to witness the unveiling of Mayor Scrimp's proud new statue... which Dennis and Gnasher have made some, ahem, modifications to. Will Gnasher be able to lead the gang to freedom or will they all be stuck in the dog house until it's too late?
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. After one of Dennis's pranks lands Walter in detention, Walter's parents invite Dennis and his parents over for dinner to trick the menace into confessing. When things don't go according to plan, a challenge is issued by Dennis's Dad: Dennis will behave for a whole evening, if Walter's Dad will dare to misbehave! Will the promise of an afternoon at the Beanotown fair be enough to tempt Dennis to behave himself, or will the urge to menace become too great?!
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. After Angel Face falls foul of one of Dennis's pranks on Sports Day, she gets her revenge by suggesting Dennis is 'leg cuffed' to Walter for the three legged race to keep him out of trouble. When, lo and behold, she 'loses' the key, she issues an impossible challenge to the menace and his reluctant wingman as payment for its safe return. After some embarrassing trials and tribulations, Dennis and Walter must overcome their differences and work together to outsmart her... temporarily at least.
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. Dennis decides to get a pet pal for Gnasher to keep him company while he's at school. After a few misfires, they find the perfect playmate: The Abyssinian Wire-Finned Piranha. However, they find out too late that there is only one condition - they must never, under any circumstances, feed it pies... Uh-oh. What's the worst that could happen? Surely not a flatulence-induced tidal-wave of destruction?
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. A tiger escapes from Beanotown zoo while Gran is babysitting Dennis and Bea. While the Senior Menace is distracted by a kickboxing game, Dennis sneaks out with a special tiger-catching contraption and heads off for an adventure... Meanwhile, Bea escapes to do some tiger hunting of her own - and proves herself to be the wildest beast of them all!
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. Walter shows off some new tricks on his fancy skateboard, prompting Dennis to make a jibe that even his Gran could do tricks like that with such a high-tech board... the bet is on! But Walter secretly sabotages the trick, causing Gran to hang up her menacing shoes as a matter of public safety. It's up to Dennis, Gnasher and Angel Face to expose the truth and get Gran back to her wily self, and to put Walter back in his place!
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. When the mayor ruins Cream Pie Day at Dennis's School by reserving all the pies for his own special Summer Fete, Dennis & Co orchestrate an elaborate pie heist - with a little 'help' from Angel Face, who secretly has her beady eyes on the pies for herself, and ensures the menaces are caught red-handed! How far will the boys go to liberate the pies from their rival menace and reunite them with their rightful owners? It might be worth a stint in detention after all...
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. There's been an outbreak of the super infectious Beanotown Cold and Dennis seems to be the sole escapee, leaving him the centre of attention for all the teachers in the whole school - nightmare! Dennis is run ragged and decides he needs a day off - if only he could find a way to catch the cold too...
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. Walter challenges Dennis to beat him in a game with proper rules - five-a-side football. But Walter secretly breaks his own rules, enticing Gnasher to puncture all the footballs... a minor setback for Dennis, who quickly employs Bea to reinflate them in her own unique way, with typically hilarious - or should that be victorious? - results!
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. Gnasher has a crisis of confidence when 'the world's greatest dog' comes to town, Kutta - a dog astronaut who has just orbited the Earth as part of a special Space programme. Dennis and co resolve to get the old Gnasher back by going one better; they make a plan to menace up a spaceship and spirit Gnasher away to the 'moon', to meet an 'alien' and return a hero... of course it doesn't quite go according to plan, and when the menaced up spacecraft goes out of control Gnasher must find his mojo in order to save the residents of Beanotown for real.
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. After a prank goes particularly wrong (or should that be right?) Dennis needs to find a way to pay for the damage. The menaces reason that the best way to raise funds is to offer a service everybody needs - a car wash. Sadly, however, Beanotown's cars just aren't that dirty - but where there's a Menace, there's always a way. Realising the natural enemy to a clean car is an indiscriminate bird, the gang menace up a remote-controlled airborne pooping system, but the fake-poop soon hits the fan when the Colonel - a keen ornithologist, naturally - decides he has to capture it.
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. The World's Largest Sausage is coming to Beanotown, and Dennis has promised Sgt Slipper that Gnasher won't eat it - or it's the kennels for good. The next day, a dog-shaped bite is found in the giant sausage, and Gnasher is immediately banged up. Knowing that his buddy is innocent, Dennis goes into Detective-mode, pulling out all the stops to find out who is responsible for snaffling the sausage segment and framing his faithful friend.
After Gnasher's ongoing feud with the postman stops Walter from getting his weekly subscription to Magnet Monthly, he makes a complaint to the postal service. The next time Gnasher goes to 'welcome' the postman, he's met with a large robotic vehicle with iron-strong tentacles - the Post-A-Tron. Gnasher is horrified - he's one gnash away from the world record for the largest collection of samples from Post Office-issue underpants! Dennis and co menace up their own robot to take down the Post-A-Tron and restore disorder to the post-boxes of Beanotown - but it'll take a plan of some magnitude to get the job done.
It's school photo day and Dad has demanded that Dennis stays squeaky clean for the perfect portrait - or he's grounded for a month! How hard can it be? Unfortunately, Walter overhears the deal and scuppers his lift to school, so Dennis has to negotiate a maze of mess and get seriously inventive in terms of transport to make it there on time. Will he dodge the dirt and make his parents proud?
It's fund-raising time at Beanotown School - and there's a reward up for grabs for whoever sells the most home-made cookies. Naturally, this leads to all out commercial warfare as Dennis and Angel Face take on Walter in the ultimate clash of the cookies. Who will take home the prize and who will take the biscuit?
Dennis and his family dodge a nightmare 'holiday' at militant Auntie Pru's and set off for Camp Sunshine for a week of family fun... only to find Walter and his Uncle in charge! Even bigger nightmare! Dennis has to find a way to inject some fun back into the holiday for everyone without getting thrown out in the process - and a treasure hunt looks like just the golden menacing opportunity he's been after.
After a typically traumatic bath time, Dad decides to take a leaf out of Walter's book and lures Gnasher into Claude the cat's luxury pampering tub. But, horror of horrors, sharing the bath has a strange effect on the two pets, as they seem to switch personalities...what's going on? More importantly, how do Dennis and Walter get their furry friends back to their usual scruffy and sleek selves?
Despite protestations, Dennis is assigned to Sgt Slipper's command for Take A Kid To Work Day. Grumbles all round - until reports start flooding in of garden-gnome thefts all over Beanotown... this might not be so boring after all! However, due to his ability to think like a master prankster, Mayor Scrimp tasks Dennis with finding the culprit - or copping the blame himself! Luckily, they have their very own police dog to sniff out the clues, so the menaces go into full on detective mode to find the gnome-napper and solve the case.
Walter finds a hand-written journal amongst the junk at the Beanotown Jumble Sale called The Book of The Menace, literally containing every trick in the book! What's a menace to do? No matter what they pull out of the pranking bag, Walter seems to be untouchable - anticipating their every move, and turning all their pranks against them. It's Dennis's worst nightmare come true - how will the gang usurp the new pretender to the menacing throne?
Dennis and co have to grow some cress for a homework assignment super-fast, or risk getting a detention... on the day of the Beanotown Comic Convention! Disaster! The menaces concoct a super plant food and borrow some exotic seeds from the Colonel - a keen botanist, naturally - but it works a little too well and soon Dennis and his pals have to deal with an overgrown lawn, and some errant water-cress hybrids with an insatiable appetite.
After Dennis and Walter mess up a science experiment, De Testa decides the boys would benefit from a bit of mutual understanding, and issues the rivals with a formidable challenge - they must each live the other's life for a day... and if they fail the experiment, they'll be teamed up for everything, forever! Dennis must teach Walter how to menace - and learn how to behave himself - in record time, in order to avoid a fate worse than detention.
A new patisserie opens in Beanotown right opposite Pieface's Dad's pie shop - and the crafty owner is determined to put his rival out of business... Quelle horreur! Horrified at the thought of the menaces being split up, Pie Face's Dad issues a challenge: whoever can cook the tastiest pie wins the coveted spot on the high street; and the loser has to shut up shop and leave town... easy as pie, surely?! All they have to do is find the right recipe...
