Episode 1 - The Pecking Order

Yin and Yang prepare to go on vacation. Coop returns and tried to warn them of The Night Master's energy escaping, but they ignore him until it's too late.

Episode 2 - Party Favors

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!

Episode 3 - Smoke and Mirrors

Yin and Yang are pitted against each other in a fight.

Episode 4 - Yin-Credible!

Yin takes credit for saving the mayor, without acknowledging Yang's help.

Episode 5 - Brain Drain

Yang's brain becomes controlled by a villain known as Mastermind.

Episode 6 - The Big Payback

Master Yo faces an old nemesis he has never been able to defeat.

Episode 7 - Imperfect Fooplicates

Yin and Yang uses a magical bracelet to make fooplicates of themselves until Yuck returns.

Episode 8 - Messy Relationships

Melodia the Aardvark Princess returns to claim Yang until Fastidous makes Yin mad with the Stink Aardvarks.

Episode 9 - A Bad Case of the Buglies

Carl casts an ugly spell on Yin and Yang after Yin insults Carl and calls him a "buglie".

Episode 10 - Control Issues

Yin and Yang learn self-control at an institute, but its founder, Ultimoose, may have more sinister plans in store.

Episode 11 - Foreign Exchange Problem

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.

Episode 12 - Turnabout

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.

Episode 13 - The Manotaur

Yin and Yang attempt to defeat a half-human, half-bull monster.

Episode 14 - League of Evil

Carl forms a league of evil with three other villains when they all rent an apartment together.

Episode 15 - This Yang Isn't Brought To You By ...

Yang endorses a toy line for money but doesn't realize that the toys are harmful to children.

Episode 16 - Stuck

Yin, Yang and some of their friends accept a free vacation to a mysterious island, not knowing that it's a trap set by Smoke.

Episode 17 - Deja Foo

Ultimoose and Yang search for an amulet that will give them all of the Night Master's powers.

Episode 18 - Gone-A-Fowl

Yin reluctantly goes on a date with Coop, and she falls under his evil spell.

Episode 19 - Basic Yin-stinct

Carl tricks Yin into eating seeds that make her doubt everything.

Episode 20 - Fighting Fooberty

Mr. Pondscum realizes he isn't a goldfish but a polliwog.

Episode 21 - Yin Yang Carl

Carl magically switches brains with Master Yo in an attempt to destroy the Woo Fo warriors.

Episode 22 - Smorks

Yin takes in some seemingly harmless green creatures as pets, but Yang believes they are dangerous.

Episode 23 - Wonder Tweens Go!

Yin and Yang become addicted to a TV show about a superhero but learn they should focus instead on becoming heroes in real life.

Episode 24 - Touchy Feelings

Yang loses his emotions after he is zapped by Fred.

Episode 25 - O'Brother There Art Thou

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.

Episode 26 - Roger... Over and Out

Episode 27 - An Inconvenient Tooth

Yang develops a rare tooth condition and could end up as dinner on Edna's table.

Episode 28 - Situation Tragedy

Carl traps Yin and Yang in a sitcom with a magic remote.

Episode 29 - Skirting the Issue

Yang receives a powerful artifact, but it's a skirt and he refuses to wear it.

Episode 30 - Moon Over My Yinnie

Carl attempts to blot out the rays of the sun.

Episode 31 - Clown-Fu Fighting

When Yang finds out that Master Yo knows a form of fighting known as Clown Fu, he wants to learn the various techniques for himself.

Episode 32 - Cat Smash Fever

The Chung Pow Kitties are desperately trying to claim the Licking Stick in the Woo Foo Weapon armory as their very own.

Episode 33 - Camp Magic Pants

Yin and Yang begin magic training at Camp Magic Pants and become involved in pranks that get them into trouble.

Episode 34 - Worked Stiff

Yang takes a job at an amusement park that turns out to be anything but fun.

Episode 35 - Mission Yinpossible

Yin and Yang attempt to prevent Carl from using a pair of magical slippers for evil purposes.

Episode 36 - Disapp-Eared

Yang casts a spell that makes him disappear and unable to be heard.

Episode 37 - Get Off My Back

Yin and Yang are magically stuck together by Mastermind so they will learn to cooperate with each other.

Episode 38 - Slumber Party of Doom

Yin hosts her first slumber party but she drives everyone crazy with her strict schedule.

Episode 39 - Old Softie

Badfoot tries to steal a powerful artifact from Master Yo.

Episode 40 - Dance, Dance Devastation

Yin and Yang play a cursed video game, which requires them to keep dancing or die.

Episode 41 - Upstanding Yuck

Yin and Yang's former enemy Yuck returns and claims to be a reformed rabbit.

Episode 42 - A Walk in the Woods

Yin and Yang meet a seemingly sweet old lady who really wants to fatten them up and serve them for dinner.

Episode 43 - Welcome to the Dark Tomorrow

Episode 44 - Today You Are a Bear?

Yin and Yang want to become bears, but an evil ranger tries to get them mauled by the animals.

Episode 45 - Pets Peeved

Yang gets a pet but it runs away after he neglects it.

Episode 46 - For the Love of Clamboy

Yin tricks a clam into liking her so she can steal his jewels.

Episode 47 - Zarnot's Girlfriend

Zarnot creates a robot girlfriend for himself.

Episode 48 - The Secret Life of Possum Panda

Yang seeks out a vigilante named Possum Panda, but he discovers solo crime fighting isn't all it's made out to be.

Episode 49 - Dummy Up

Yang resorts to talking to a dummy after Master Yo leaves town, which infuriates Zarnot.

Episode 50 - The Howl of The Weenie

Eradicus creates a monster that gains power by consuming everyone's fears, and Yin and Yang try to destroy it.

Episode 51 - Game Over

Yin and Yang compete with the Manotaur in a game of chance.

Episode 52 - Creeping With the Enemy

Carl disguises himself as a normal kid to stop Eradicus from carrying out an evil plan that would make everyone bad.

Episode 53 - The Yindianapolis 500

Yin and Yang are tricked into entering a dangerous car race.

Episode 54 - Personality Problem

Yuck causes Yin and Yang to swap personalities so he can weaken them and seize power.

Episode 55 - Season's Beatings

Zarnot disrupts Master Yo's holiday plans.

Episode 56 - Splitting Hares

Yin and Yang team up with different partners to fight a common enemy.

Episode 57 - Extra Cheese, Anchovies and Doom!

Yin and Yang tease a pizza-delivery man, so Master Yo makes them deliver pizzas on time or else become a slice themselves.

Episode 58 - The Confidence Game

Master Yo goes to extreme lengths to get Yin and Yang to take fighting seriously.

Episode 59 - Roboticus Maximus

Mastermind attempts to destroy the city while Master Yo is absent, so Yin and Yang assemble an army to fight him.

Episode 60 - Size Matters

Carl tries to make Yang his evil minion.

Episode 61 - Unmoving Pictures

Yin and Yang are tricked into starring in a movie that is actually a trap set by Eradicus to destroy them.

Episode 62 - The Recline and Fall of Civilization

Master Yo's recliner is discovered to be inhabited

Episode 63 - Mind Games

Master Yo tries to teach Yin and Yang how to prevent Ella Mental from reading their minds.

Episode 64 - The Carl of the Wild

Yin searches for a rare wild beast to protect it from hunters.

Episode 65 - Clothes Encounters

Yin and Yang's dirty-laundry pile turns into a monster and escapes into town.

Episode 66 - Commander-in-Cheat

President Muffins enlists help from Yin and Yang in a bid to get reelected.

Episode 67 - Party Troopers

Yin and Yang throw a party, but Eradicus plans to crash it so he can destroy them.

Episode 68 - Shadowcluck

Yin falls in love with Coop once again, but their relationship blinds them to Eradicus' plan to destroy the town.

Episode 69 - Yin! Yang! You!

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.

Episode 70 - Division Quest

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.

Episode 71 - Yin, Yang... Who?

Yin and Yang search for their parents after Yin is drained of her aura and only a transfusion from a parent will save her.