After Jacob moves to Montreal, his Dad takes him, Noah and Emma to a wrestling match where Jacob unknowingly bumps into the Hooded Fang, a famous wrestler.
With a desire to look "cool" on his first day at a new school, Jacob borrows his brother's favourite skull t-shirt to wear at school, but the shirt is confiscated by Principal Greedyguts as a violation of the school's dress code, and is placed inside the school's vault.
Jacob's poorly performing hockey team improves significantly under the influence of a Gummer Gormley hockey card he received from his father as a good luck charm. However, this luck ends when school janitor Leo Louse steals it from Jacob's locker.
Principal Greedyguts replaces the school's lunch lady with Leo Louse in a move to make more money for himself. Jacob investigates the plot with the help of his neighbour, X. Barnaby Dinglebat, a master spy.
Jacob and Buford investigate the sudden popularity of a new newspaper, The Daily Crown, the product of a mind control plot by Carl Fester King using chemicals in the paper's ink (ingested by unsuspecting readers licking it off their hands).
Jacob and his friends hunt for a 40-year-old treasure dictated by an old library book.
Jacob's hair has a bad cowlick on his school's picture day,
Jacob cheats the system on a pop quiz in his geography class, but is eventually selected as a geography expert for Dreary Meadows' team in a nationally televised quiz bowl.
After Dreary Meadows' gymnasium is given a failing grade by the system's Superintendent, Jacob and his friends try extra hard to raise money in a chocolate fundraiser to bring it up to code.
Jacob is given the task of fetching bagels for his dad's Sunday brunch, however the relatively simple task is complicated by various occurrences.
Jacob investigates a plot by a group of seniors to knit a giant tea cosy to cover the entire city of Montreal for the winter.
Jacob is transported back in time to the period of the coureur des bois to investigate the secrets of Claude LaToque, a ghost who ran away from the local graveyard.
Aunt Good-For-You's health shakes cause greater issues to the family than intended.
Jacob gets to join a secret organization, but everything goes wrong when a mission ends with detention for stink-bombing the school.
Jacob accidentally breaks Daniels' favorite record and wishes he could go back in time to correct his mistake.
Jacob's pal Gary seems to be in league with Con Man Carl Fester King to throw the upcoming bout for the wrestling championship belt.
Jacob puts a spell on Marfa so she will be nicer to him.
Jacob and Buford build the predicto magic machine for a fortuneteller booth at the school fair and are amazed that it does predict the future.
Jacob does volunteer work at Dr. Leduc's clinic, who is rumored to have a secret laboratory.
Jacob asks Miss Sweetiepie to tell him the secret to her get up and go.
Jacob and Buford help a raccoon live in the wild.
Jacob and Renee try to find good homes for a group of mangy stray cats; Leo Louse starts a business of finding lost cats and returning them.
Jacob is paired with a trio of slackers in a science project to build a potato-powered clock for an important science project.
Brilliant transfer student, Ann, may replace Renee as the school's top student.
On a camp-out in the backyard, Jacob and Buford run into the "Demon Drooler", a cannibalistic beast who prowls through the ravines of the city in search of its victims.
Jacob falls into the school's lost and found box.
Shortly after Jacob vows revenge on practical jokers Emma and Noah, X. Barnaby Dinglebat accidentally creates a "negative" version of Jake using an unusual camera from his collection. Jake's negative twin pulls numerous mean-spirited pranks around town while the real Jacob takes the heat. In the end, Jake learns that pranksters never prevail, because what goes around comes around.
Jacob is mistaken for The Amazing Ronald when he dons the colourful costume at Morty's book signing. At first this causes great embarrassment for Jake, but in the end, he not only fills the costume, he fills the caped crime fighter's shoes, as he foils Fish and Fowl's elaborate plan to take credit for his Dad's latest book. Jake is proud that his adventure is just the inspiration his Dad needs to write his next book.
Jake and Buford reluctantly agree to watch a super scary horror movie called "After School Abattoir" with Jake's older siblings. On the day of the viewing, Jake and Buford get trapped inside the school, and the events that take place eerily parallel the movie.
When the neighbourhood gets too loud for Miss Sweetiepie, she modifies an old gramophone so that it can capture sound instead of broadcast it. All's well and quiet until Dad's voice is accidentally captured the day before he's to give an important speech. After a pertinent piece of the modernized machine eludes them, the race is on to rebuild the gramophone and recover Dad's voice in time for his big day.
Frustrated by never having a matching pair of socks, Jacob investigates the inner workings of the dryer and discovers that it is actually a portal to a parallel universe. A universe so topsy-turvy that Buford has a day-timer, the bullies are his best friends, and socks are used as currency. Jacob and X. Barnaby Dinglebat hatch a plan to get Jacob back to his proper dimension.
Buford accidentally switches places with Bobo, a chimp from Canadian Space Camp. Since the Space Camp excursion was originally meant for Jake, he's somewhat annoyed that Buford went in his stead… until Bobo turns out to be one cool amigo. Having Bobo as a new best friend improves Jake's social status tenfold. Although Jake's enjoying his new popularity, he can't help but miss his best bud. Bobo helps Jacob rescue an eternally oblivious Buford who is headed for the moon in a rocket built from the most Canadian of building materials; birch bark.
Principal I.M. Greedyguts' good twin brother is so good that everyone at Dreary Meadows wants to enroll in Y.B. Greedyguts' Cheery Meadow's Elementary School. This makes I.M. see the error of his ways when even Sour Pickle jumps ship, but it doesn't move him enough to resort to old-fashioned honesty to get the staff and students to return. And it turns out that if things over at Cheery Meadows seem too good to be true, they probably are.
Jacob and Buford investigate Principal Greedyguts' claim to be the inventor of the jelly donut, and uncover a sordid tale of mystery, double cross and intrigue!
Spineless Spencer, a celebrity hockey player who's more interested in the celebrity than the hockey, launches a new line of ice skates. Everyone's got a pair… except for Jacob, who's stuck with an old, hand-me-down pair that look more like boots than skates. Jake endures some light-hearted teasing, but Dad assures him that it's not the gear, but the heart inside the gear that counts. Jake follows this advice and uses it to beat Spineless at his own game.
Due to a spat between Noah and Emma (a.k.a. the Intrepid Shapiro and the Fearless O'Toole), it looks like Kid Power will be disbanded forever, just when Jacob has finally been allowed to join their noble ranks. It's up to Jacob to deal with a looming crisis and heal the rift between his feuding siblings in the process.
Miss Sour Pickle press gangs Jacob into acting in the school play, which turns out to be cursed. Will a crazed Phantom prowling the catwalks, and demonically possessed co-star treading the stage spell the final curtain for Jacob Two-Two?
Jacob becomes a Library Ninja and vows to track down the "Bookworm" - the Library's most wanted villain and holder of a world record late return fine. To Jacob's shock, it seems all clues lead to his own library-loving Dad!
Zaidie Saul sees a legendary sea serpent known as "Boggy," but everyone assumes it's just another one of his tall tales. Jacob sets out to prove his Zaidie is telling the truth, and triggers a sea serpent mania that could endanger the shy and peaceful beast—if she really exists, that is.
Jacob’s well-meaning efforts to make his Aunty Good For You’s ‘Good For You’ cookies taste good too leads her into a business partnership with unsavory con man Carl Fester King. Jacob tries to rescue his Aunt’s recipe and her good reputation.
While playing with walkie-talkies borrowed from X. Barnaby Dinglebat, Jacob suspects his Mom is the ring leader of a band of spies after hearing radio interference. He finds that once the Canadian Armed Forces are on red alert, they won’t quit until they get their man... or Mom as the case may be.
Miss Darling Sweetiepie’s stint as a substitute teacher leads her to instill old fashioned values in her students by turning them into a bunch of mindless, well behaved zombies. A school full of mindless zombies is the answer to Principal Greedyguts’ wildest dreams.
Jacob and friends travel to Ottawa to confront the Wicked Glitch after Jacob’s life is turned upside down thanks to Prime Minister Perry Pleaser’s under-budgeted attempt to bring Canada into the computer age.
When Jacob accidentally switches brains with Principal Greedyguts he decides to make the best of a bad situation by making life better at Dreary Meadows School. Meanwhile Greedyguts does his best to make life miserable for Jacob.
Jacob finds life on Miss Sour Pickle’s good side is even worse than being on her bad side. When he attempts to restore the proper order he only becomes even more of a ‘teacher's pet’.
A pesky love bug buzzes into Jacob’s life, causing Melinda to think he has a big crush on her, making Valentine’s even more terrifying than usual.
An off limits portable classroom and the sudden appearance of a muscle-bound supply teacher with a monotone accent (that strangely resembles Arnold Schwarzenegger) adds up to Jacob being the ‘chosen one’ who is destined to save all of mankind from some terrible future fate. Renee attempts to get the boys to say "personkind" instead of "mankind."
