Yang hurts Yin's feelings when he starts training under Ultimoose. / Master Yo then tests his young protégés by having them watch a seemingly harmless rock named Hershel.
Carl, the Evil Cockroach wizard, gives Yin and Yang a new TV with only one remote. Yin and Yang fight over the remote, giving Carl a chance to destroy them. / Yin and Yang tell Yo that he is old, and Yo makes them pick up his medication. Yo throws a party to look cool, but Yin and Yang make Yo's old enemy, Kraggler, mad. Kraggler turns everyone, except Yin and Yang, into old people.
Yin and Yang's bad traits combine and take the form of a green rabbit. / Yang fakes being a Woo Foo Warrior to impress a girl. To prove his skills, he has to take out a huge steel beetle.
Yin and Yang try to teach Yo that it's not good to boss kids around, but little do they know, Herman the Evil Ant is waiting for the panda to leave so he can conquer the world. / Yin and Yang get into a fight while cleaning their room, and when Yin costs Yang the world record at a video game, he refuses to shower until one of them cracks and apologizes. But Yang is soon encouraged to clean himself up when his odor attracts the amorous advances of Malodia the Elephant, Princess of the Stink Aardvarks.
Yin comes down with a case of the Woo Foo Flu, an illness that causes her to bend reality whenever she sneezes. Master Yo orders Yang to take care of her while Master Yo concocts an antidote for the Woo Foo Flu. However, Yin later gets captured by Carl - who intends to exploit her illness so it can help him take over the world - and Yang may have to get himself sick to save Yin. / Yin and Yang use Zarnot to boost their popularity by lying. When Zarnot becomes huge, they must prove that they are telling the truth.
Yang uses the Glasses of Unlimited Smartness to pass the test to get to the next level of Woo Foo training. But Carl tries to get Yang to help him grow huge. / Yin's Woo Foo Aura gets out of control, trying to save the environment and escapes Yin's body, destroying the town.
Yin falls in love with a person named Brett who turns out to be Yuck. / Yin and Yang have to stop Pondscum from stealing Yo's golden chair.
Kraggler uses the cronalogicum to trade ages with Yin and Yang so he can become young again. / Yang won a doll at the county fair for Yin, but the doll is Zarnot.
Yo tells Yin to go to the valley of the two-ni-corns and find a rainbow mane, The Gnu to fix her toy. Meanwhile, Yang is taken over by Ultimoose. / Saranoia makes a snow day so that Yin and Yang can play outside and Yin may have a day off, as she holds an obsession with Yin's future
The Night Master rebuilds his armies that were frozen years ago by Master Yo. Little do they know, Yin and Yang are involved in his plan.
Yang is thrilled that the CPK (Chung Pow Kitties; a pastiche of Hello Kitty and Powerpuff Girls), a rock band made of cats with mad ninja skills in town. Not only that, but they also appear on Broadway and are looking for a new member. Having a sharp sword is a requirement. Yang's bamboo sword isn't sharp enough, but Master Yo refuses to give Yang a new sword. Yang plots to steal weapons from the Forbidden Armory to try to make the cut. / Yin meets a hamster who loves to clean while she is out buying cleaning supplies. The hamster reveals himself to be Fastidious, and asks the Woo Foo students to help him defeat some of the spirits who have been making a mess. However, there is something sinister about Fastidious.
Carl wants to use his mother's destructive jewelry for his nefarious purposes (especially since she never wears them) but his mother, Edna, won't let him. Meanwhile, Yang pulls a practical joke on Master Yo by posting his bio on a website for dating service for old people. Master Yo's blind date turns out to be Edna. Can Yin and Yang break up this relationship that's not meant to be before Carl can take advantage of his mother's absence? / Yin and Yang are fishing when a group of female pirates appear. They act really nice towards Yin, but not so much towards Yang. Are these pirates all they appear to be, or is there something else about them?
Master Yo shows Yin and Yang that black-and-white films can be scary. / Yin uses the misfortune cookies on Yang to take away his good luck.
Yang is really interested in a girl named Lina, who is Yin's really good friend. The trouble is, Yang's behavior turns Lina off. So Master Yo suggests that Yang should try to be more like Yin in order to make Lina like him. / Yin and Yang are fed up with not getting an allowance from Master Yo for doing chores around the dojo. Then a stranger appears, announcing the opening of a new UltraMega Mall in their town and giving the two young warriors credit cards to their heart's content. Are Yin and Yang playing directly into an evil villain's plans?
The Night Master hides in Yang's imagination. / Yin and Yang host an awards show for evil Brother Herman.
The Tree Stump Kid named Dave is disappointed because his friends Yin and Yang missed his birthday party. To make up for it, Yin and Yang promise to do anything to make it up to Dave. When Dave learns he has a "Day After His Birthday Party" coming up, he convinces Yin and Yang to pretend to be his students. But Master Yo warns Yin and Yang that no good can come out of lying. / Years ago, Master Yo gave a powerful weapon, the Knuckles of Infinite Smackdown, to a friend for safekeeping. But now that The Night Master is after it, Master Yo must take Yin and Yang on a road trip to try to throw The Night Master's lackeys off Master Yo's trail.
Saranoia wants to destroy Yang. She goes to Master Yo's dojo to try to destroy Yang there. To get in, Saranoia uses a broom wand to transform her into a maid. But the wand has a mind of its own and won't let Saranoia destroy Yang until the Dojo is spotless! / Carl thinks the one thing that keeps him from being a great villain is that he has no henchmen. When he hears The Night Master is holding an Evil Convention in town and every villain is invited, Carl goes there hoping to find a henchman. Meanwhile, Yin and Yang go to the convention in disguise, hoping to find out about The Night Master's master plan.
When Master Yo was younger, he was in a rock band called Pandangerous. The band impressed their audience with the help of a magical amp. But the amp was stolen by the Chung Pow Kitties to brainwash their audience to do their bidding. Yin and Yang must now form their own band in order to get on stage and stop the Kitties. / Yin and Yang are bickering on how best to defeat Carl during his latest attack on the city. Since Yin and Yang refuse to listen to Master Yo about working together, Master Yo decides the only way they're going to learn how to work together is if they're forced to live through history and see the mistakes previous Woo Foo Warriors have made.
It's a holiday known as Family Day, where family members give each other gifts. When Carl and Herman's mom wants blue and pink rabbit's limbs more than any other gift in the world, Carl and Herman both want to give their mom the gift. But when working solo doesn't work, the brothers make a one-hour truce to work together to trap and take the limbs off Yin & Yang! / Someone has a grudge against Master Yo and kidnaps him. Yin and Yang suspect Zarnot and then Saranoia, but neither of them has done anything to the panda. Nobody else Yin and Yang knows is capable of pulling this kidnapping off.
Yang is sick of being surrounded by Yin's girl stuff and wants to hang out with some real guys. Unfortunately there seem to be no real guys for Yang to hang out with. Then a strange trio of teenage guys move into an abandoned house across the street from the dojo. Yang finally thinks he has the perfect place to hang out, but beneath things aren't what they appear to be. / When Master Yo leaves on a vacation for some alone time, he leaves Yin and Yang unsupervised. The two rabbits think this is going to be a great experience for them, until Carl and Herman try to destroy Master Yo's Dojo.
Two evil spirits, who make people lazy and over eat, are released from their jars. But everybody is already lazy and eat too much, so the spirits have no work. A super-hero named The Lesson comes from beyond to make the city right again, but nobody is forcing the citizens into their bad habits. The Lesson decides to force the citizens to learn a lesson even if it hurts them / After Master Yo accidentally swallows some of Carl's backwash after accidentally drinking after him. This causes Yo to slowly become evil. Yin and Yang rush to try to save their master.
While Yin is busy following Master Yo's lessons, Yang is goofing off playing video games! Master Yo believes the only way Yang can learn why video game playing is only good in moderation is if he learns it for himself. This brings The Lesson back, and he is determined that Yang find out the hard way how bad too much video game playing is. / Carl decides that in order to beat the Woo Foo Warriors, he needs to frame Yin and Yang for abusing their Woo Foo powers. Now Yin and Yang are on trial, and the jury is stacked with evil beings.
The Safety Deposit Box Dimension opens only once every 100 years. It's opening today. Yo needs the Toilet Brush of Illumination to fight The Night Master. The Night Master shrinks Yuck and puts him into Yo's body, so he can wait until Yo grabs the brush before emerging to claim it. Yin and Yang see Yuck enter Yo's body and have to stop him by shrinking themselves and entering into Yo's body to stop Yuck. / To raise money for a new security system, Yin and Yang open up a babysitting service. The Kraggler cons them into babysiting his nephew, the Shaggler. What neither of them know is Kraggler knows Yo's security system is down. The Kraggler makes himself so young he turns into a baby, allowing Shaggler to get a weapon of Master Yo's, the Adult Diaper of Doom.
Herman's Ant Brotherhood trims all of Master Yo's fur off so Herman can steal the Geo-Demosoic Device. Yin, Yang and Yo put up a good fight, but Herman hits the students with a hammer and grabs the device before Yo's fur grows back. / Yin and Lina want to be friends with a popular girl named Miranda. Miranda doesn't like Lina, though. Miranda is actually Saranoia who used a magic wand to turn herself in to a popular girl. Yin has to lie to Yang so she has a chance to be popular, but the Lie Fairy appears and Yang has to keep the Lie Fary busy. Yang finds out that Miranda is really Saranoia, and he tries to use the Toilet Brush of Illumination to stop her.
Information on Yin and Yang is leaked to the Night Master and the twins try to find the culprit.
The Night Master plots to kidnap Master Yo so he can plunge the world into darkness and be free.
Yin and Yang prepare to go on vacation. Coop returns and tries to warn them of The Night Master's energy escaping, but they ignore him until it's too late. / Coop's mom is throwing a "welcome back/thanks for saving the world all by yourself" party, and Yin and Yang are the only ones not invited. Meanwhile, three flunkies join together and try to get into The Night Master's fortress. However, they need the spare key, which the Night Master gave to Coop!
A new girl named Smoke comes into town claiming to want to be Yang's girlfriend. At first it's great. She likes all the stuff Yang likes. But Yang didn't count on her capturing him to be her slave champion in a tournament fighting game. Now Smoke's brother, Mirrors, picks Yin to be his own rabbit champion in the tournament, forcing Yin and Yang to go up against each other. / Carl captures the town's President, and even though Yin and Yang work together to stop Carl's plot, Yin is offered and takes all the credit for doing the job by herself. Naturally, Yang feels jaded but he has bigger things to worry about. Carl has decided to fight back, and with the power of earphones, he won't be able to hear the insults that usually throw him off. Yin has to decide whether to try to save the day by herself or swallow her pride and apologize to Yang.
Master Yo wants Yang to start using his brain to fight bad guys, but Yang isn't interested. An old floating skull villain named Mastermind, sees a way for him to use Yang's non-interest of using brain power to his advantage. Mastermind tricks Yang into giving up his brain, and Mastermind's brain now takes over Yang's body! With Mastermind controlling Yang, he can fulfill his plans for world domination. Yang will have to figure out a way to use only his brain in order to get back to the Dojo and get his body back before sundown. / As strong as Master Yo is, there's a villain even he can't beat. Once a year, a purple anthropomorphic clothed horse with black hair named Badfoot with a voice and personality reminiscent of a funk singer, comes into town to steal Master Yo's Woo Foo. And no matter what Master Yo tries, he has been unable to beat him. Even worse, if Master Yo doesn't fight, the villain threatens to bring harm to innocent civilians. Yin and Yang are determined to help Master Yo
Yin and Yang uses a magical bracelet to make fooplicates of themselves until Yuck returns. / Melodia the Aardvark Princess returns to claim Yang until Fastidous makes Yin mad with the Stink Aardvarks.
Yin has finally thought of a good insult for Carl: He's bugly (because he's a bug and he's ugly). But Carl isn't going to take this insult lying down. he shells out $29.99 for a repulsifier potion from Saranoia and tricks Yin and Yang into drinking it. Now Yin and Yang both look bugly (because they're bunnies and they're ugly). Yang doesn't care about how he looks fighting evil, but Yin does and she takes it hard. / Master Yo wants Yang to learn self-control, but because Yang won't learn it from him, Master Yo takes Yang to learn from Ultimoose, who claims to have turned over a new leaf. While Yang is being forced to fight a giant monster until he learns self-control, Yin has to figure out why her friends are acting so weird and stealing stuff. It turns out Ultimoose isn't trying to teach self-control, he's trying to use mind-control on Yang and his friends with the use of a magic hat.
Yin and Yang get a lesson in cultural enrichment when a foreign exchange student from Redneckistan named Jobeaux shows up. Meanwhile, the Chung Pow Kitties return in search of a powerful Woo Foo artifact. Yin and Yang suspect that there is more to Jobeaux than meets the eye. / Master Yo is sick of Yin and Yang disrespecting him. Yin and Yang are sick of Master Yo treating them like babies. When young Kraggler switches ages with Yo (part of a diabolical plan), Yin and Yang are forced to babysit the three-year-old Yo, and he reveals how powerful (and bratty) he was as a child.
A half-human, half-bull monster called The Manotaur has captured the two-ni-corns so he can shave them and make a wig from their fur. But The Manotaur's scheme is deeper than that. It also involves ripping off the designs of a villain in Yang's favorite comic book. Yin and Yang use that knowledge to battle The Manotaur. / Yin and Yang decide that they want their own headquarters, and Carl decides that he's tired of living with his mom. So Yin and Yang get a place in Master Yo's Outhouse while Carl tries to find an apartment to rent. Yin and Yang's problem is that the Outhouse isn't big enough, and Carl's problem is that three other villains are also laying claim to the place that Carl wants. Carl decides the four villains should share the apartment and become a League of Evil. Yin and Yang must find a way to defeat Carl, Smoke, Mr. Pondscum, and a new villain called The Puffin.
Yang wants to buy a new Y Cube 9000 portable gaming system. But when a mysterious sponsor named Shillshore sees him fight, he wants him to be a spokesperson for GreedCo toys. Yang sells his dignity, unaware that the toys he's endorsing are posing serious harm to children. Yin tries to bring Yang to his senses before anyone gets hurt. / Yin, Yang, Lina, and Roger Jr. are bored out of their minds until a mysterious mail carrier (Smoke, in disguise) gives them a coupon for a free vacation to an island. Even though they all figure that it's probably a trap, they go anyway since it will be more exciting than what they have been doing. Dave insists that he comes along. But when they get to the island, not only does it turn out to be a trap, it turns out to be a much better trap then they expected it to be, and everyone except Dave ends up getting captured by Smoke. Now it's up to Dave to find a way to defeat Smoke and her three evil hench-creatures.
Ultimoose and Yang search for an amulet that will give them all of the Night Master's powers.
Yin reluctantly goes on a date with Coop, and she falls under his evil spell.
Yin's Woo Foo instincts are always spot-on; Yang's decisions are always wrong. Carl manages to hex Yin by tricking her into eating Watermelon Seeds of Doubt. With Yin always second-guessing herself and unable to make decisions, Carl's evil plans have a chance to succeed. This episode is a parody of the TV series 24, following a countdown clock to zero, when Master Yo finishes going to the bathroom. / When Yin and Yang's Woo Foo powers start acting up and their bodies start changing, Yo realizes he has to give them "the talk." Meanwhile, Pondscüm is going through some changes too. It turns out that he's not a goldfish. He's a pollywog. When the Blixens decide they don't want to hang with him, he tries to steal enough money to get a trans-species plastic surgery.
Carl discovers that Yin and Yang have forgotten Master Yo's birthday. So Carl tricks them into accepting a dangerous gift to give to Master Yo, so Yin and Yang won't be thought of as being thoughtless. But the gift is really a candle that once lit and blown out, switches the brains of Master Yo and Carl. Now Master Yo is in Carl's body, and Carl is in Master Yo's body. Carl plans to order the Woo Foo Warriors to their doom, while Master Yo finds out just what Carl has to deal with at his home. / Master Yo has to go to a responsible parenting meeting and leave Yin and Yang at the dojo. He warns Yin to not take in any pets. But when Yin sees a bunch of seemingly harmless green creatures called the Smorks, she decides to take them in and protect them from Yang. But Yang thinks that the Smorks are harboring a dark secret and actually aren't that innocent.
The one show Yin, Yang, Lina, and Melodia love more than anything in the world is "Super Tweenage Team Teens Go." They never miss an episode. However, their dedication to the show interferes with their responsibilities, and this brings back The Lesson! This time, he shows the four characters (and Dave, just for the heck of it) why they should be more focused on being heroes in real life than trying to be superheroes on a TV show. The Lesson uses Zarnot in his plan to teach them a lesson, which leads to unintended trouble. / Fred is conflicted because he is unsure if he should be a good guy or a bad guy. But when he runs into Yin and Yang at the mall, he gets mad and zaps both Yang and Master Yo. Master Yo's body begins to fall apart, and Yang loses his emotions. At first, Yin thinks an emotionless Yang is going to be awesome, but she soon realizes Yang is useless in a battle without all of his feelings.
When Yang separates himself from Yin and Master Yo, he saves a robot, and they start to act like brothers. But Yin is feeling suspicious and jealous and discovers the robot is actually a spy made by Zarnot sent to destroy Yang. / When Yang constantly insults and embarrasses Roger Skelewog and his father in front of everyone, he and Roger go on a Reality Show. On the show, an all-out brawl erupts between Roger Skelewog Sr. and Yang.
Yang has a bad toothache, but he won't admit it because he believes the dentist is evil. However, Master Yo discovers it and tells Yang that if he doesn't fix his teeth, that he will catch Bad Hair Tooth. Yang thinks that nothing could be worse than the dentist and runs away. He catches Bad Hair Tooth, and he turns into what looks like Bugs Bunny and acts like him, too, only with different phrases (such as "What's up, Dork?"). Meanwhile, Carl is asked by his mother to hunt a non Woo Foo rabbit for dinner to earn her respect, and he begins to look like Elmer Fudd and acts like him, too. Carl then begins hunting Yang, though he doesn't realize who it is. / Carl discovers two of Yin and Yang's biggest weaknesses. Popularity distracts them, and if they are losing a battle, they run to the Dojo. So he gets his magic remote fixed from 600 Channels Of Doom, and puts them on a sitcom in front of a live studio audience. Carl also creates an episode where he buys the dojo if they can't pay off
After Roger Jr. insults Yang's manliness (After being left in the middle of a street wearing the "Foodle-Skirt of Ultimate Protection"), they have a competition to see who's manlier. Ultimoose drains their manliness during the contest to power a missile aimed toward Tallville, and he kidnaps Yin and ties her to the missile! / Carl flies into space to destroy the sun, and Yin and Yang go after him in their Woo-Foo Battle-Cruiser. Yin has reprogrammed the cruiser to act like a boyfriend, and Carl uses his "Mother-Ship" to plant Sun-Destruction Plasma Weapons. But when the cruiser gets too possessive of Yin and dumps Yang into space, Yin has to save Yang and the three suns.
Yang learns of a new fighting style called Clown Fu. He wants to learn the art, but Master Yo says no way, and backs it up with a "because I said so." But Yang learns from the four floating Woo Foo elders that something he needs to complete an armor suit he can only get from knowing Clown-Fu. Master Yo relents and lets him learn Clown-Fu. Yin tags along and learns how to unicycle. Yang has to decide whether to take the clown wig for Woo-Foo or leave it for Clown-Fu. / Yin and Yang are tired of the Chung Pow Kitties breaking in so much. So they spread false rumors to break up the group. But they just end up with a bigger problem: Three Chung Pow Kitty-like groups? Yin and Yang have to try to bring them back together.
Yin is accepted to a camp for magical creatures, and Yang tags along because of Master Yo. Yin falls in love with Terry Otter and starts using her magic for evil purposes in order to win a contest. Meanwhile, a beast is starting to awaken, and Yuck takes control of the monster. Yin and Yang have to quit playing pranks on each other long enough to defeat the monster controlled by Yuck. / When Yang tries to get a job in order to make enough money to buy shoes, he gets a job at Manga-topia Land. He's forced to wear a "Blue Bunny Dang" costume for his job. He is humiliated and disgraced by the children, and his co-workers are fired for bizarre reasons until the only ones left are Yang and the 'Squid-Guy'. However it is revealed that Smoke and Mirrors were behind all this, and when they attempt to destroy them, Yang must decide whether to get his payment and buy the sneakers or save his new friend.
Carl receives magical slippers that grant him his heart's desire. Carl's desire is for everyone to bow down to him as the ruler the planet. But instead, it gives Carl the love that his mother, Edna, gives more to Herman. When news comes about the new Carl-loving Edna moving into a new house for Carl, Yin and Yang try to steal the slippers from Carl because they think he's going to do something evil with them. Master Yo didn't like the idea because Carl hadn't done anything evil for more than three months, but they sneak off to Carl's new home and try to steal them anyway. /During the battle with a weird rhino, Yin tries out her new Yin-visibility technique. Yang was supposed to try his new move, but he didn't learn it last night. While watching the two Woo Foo warriors battle, Carl was impressed by Yin's new powers and decides to steal them with a machine that he bought from evilBay that can suck the powers out the anyone. Jealous of his sister and struggling with a power he's supposed
Yang and Carl fight over a replica of an enchanted hammer that is for sale in a store where Mastermind works. Mastermind tries to ruin their lives by fusing the two back-to-back. The only way to undo the curse is to cooperate. After they try to waste each other, they go to Carl's Castle, where Yang and Herman become close friends, and Carl's mom takes a liking to Yang. Afterward, they go to Yang's house where Carl impresses Yin and Yo with his cooking and grooming skills. The enemies will have to learn to be friends to be free of each other. / Yin plans a 'fun' slumber party, but she starts blasting people carelessly and acting obsessive about the party, and confines Yang to his room. Meanwhile, one of the Woo Foo Elders contacts Yang, and he activates the "Woo Foo Book of Ultimate Eeeeeevil" to turn Yin's friends into mind-eating zombies. Yin will have to stop the rampage without sacrificing the fun of her slumber party.
Yin, Yang, and Yo win a trip to a pretzel factory where the head of the company shows them a large room filled with salt, a mustard river, and song-singing munchkins. But it's an evil plot tries to eliminate the Woo Foo warriors. The tour guide sets Master Yo up for serious injuries by using killer robots and pretzel snakes. The tour guide turns out to be their enemy, Badfoot. / Yang is confident that he can beat Yin in every type of video game ever made. Carl decides to use the rabbits' competitive nature to his advantage. He creates a cursed video game where the object is to dance to get the highest score. But as soon as Yin and Yang get on it, they are forced to dance for their lives. If they stop dancing, they'll die. Meanwhile, Carl has a plan to poison the Town's president by using a Cookie of Doom.
While Yin and Yang make a toilet paper run for Master Yo, they come face-to-face with Yuck. But Yuck has changed. Both Yin and Yang don't believe that Yuck is now a good guy, so they follow Yuck to see what his new evil plan is. Yuck goes to the city, donates all his savings to a Redneckistan care program, helps President Muffin's kitten, changes a flat tire, and cleans Master Yo's toe jam. But Yin and Yang still don't believe that Yuck has truly changed. / Master Yo sees that both Yin and Yang are tired from doing easy jobs around the dojo, and sends them into the woods to gain their strength back without the help of technology like cellphones, computers, and TV. While Yin and Yang are walking in the woods, re-live different fairy tales, such as Three Billy Goats Gruff, Goldilocks and the Three Bears, and Hansel and Gretel.
Yin and Yang attempt to stop Eradicus from launching the destructive Dark Tomorrow.
After being going to Vinny's Bear Mitzvah, Yin and Yang want to be bears after having a great time. The bears' enemy, Ranger Ron, takes advantage of it creating an alias of Bo Grizzly and opening a Bear school. But this school teaches you how not to be a bear. When Yin and Yang go to their Bear Mitzvah, their behavior is the opposite of what it should be. Before they know it, they are under attack by dozens of grizzly bears. / When Yang watches a video about a PuppyGriff and the VCR explodes, Yang tells Master Yo that the next best thing is to get a PuppyGriff! Yin tries to convince Master Yo that Yang is too irresponsible, but it doesn't work and Yang gets a PuppyGriff. Yang names it Li'l ShnozFace after the movie he was watching. Yang quickly gets bored and looks for something fun to do. To go have fun, he ties Li'l Shnozface to a train. When the PuppyGriff comes back three months later, he has grown into a wolf. Then Yin and Yang meet Rita, who makes them her pets.
Yin tricks a clam into liking her so she can steal his jewels. / Zarnot creates a robot girlfriend for himself.
Yang seeks out a vigilante named Possum Panda, but he discovers solo crime fighting isn't all it's made out to be. / Yang resorts to talking to a dummy after Master Yo leaves town, which infuriates Zarnot.
Eradicus creates a monster that gains power by consuming everyone's fears, and Yin and Yang try to destroy it.
Yin and Yang compete with the Manotaur in a game of chance. / Carl disguises himself as a normal kid to stop Eradicus from carrying out an evil plan that would make everyone bad.
Yin and Yang are tricked into entering a dangerous car race. / Yuck causes Yin and Yang to swap personalities so he can weaken them and seize power.
Zarnot disrupts Master Yo's holiday plans. / Yin and Yang team up with different partners to fight a common enemy.
Yin and Yang tease a pizza-delivery man, so Master Yo makes them deliver pizzas on time or else become a slice themselves. / Master Yo goes to extreme lengths to get Yin and Yang to take fighting seriously.
Mastermind attempts to destroy the city while Master Yo is absent, so Yin and Yang assemble an army to fight him. / Carl tries to make Yang his evil minion.
Yin and Yang are tricked into starring in a movie that is actually a trap set by Eradicus to destroy them. / Master Yo's recliner is discovered to be inhabited.
Master Yo tries to teach Yin and Yang how to prevent Ella Mental from reading their minds. / Yin searches for a rare wild beast to protect it from hunters.
Yin and Yang's dirty-laundry pile turns into a monster and escapes into town. / President Muffins enlists help from Yin and Yang in a bid to get reelected.
Yin and Yang throw a party, but Eradicus plans to crash it so he can destroy them. / Yin falls in love with Coop once again, but their relationship blinds them to Eradicus' plan to destroy the town.
Leena meets Jason Earles and Mitchel Musso when she lands in Earles' backyard in Hollywood, where the two friends argue over who has the best hair.
Eradicus tries to divide the Woo Foo army in order to conquer it. He then takes a vacation at a spa where Master Yo is staying, and the two enemies attempt to get along for the duration of their stays.
Yin and Yang search for their parents after Yin is drained of her aura and only a transfusion from a parent will save her.
