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 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 and Yang host an awards show for evil Brother Herman.

A new master is in charge.

A fun road trip serves as a cover for a covert operation.

Saranoia returns.

A heavy-handed hero teaches everyone a lesson.

Yang acts up in a video game.

Yin and Yang follow Yuck to a terrifying place... inside Master Yo.

Yang uses an ancient tool to end Yin's constant pursuit of popularity.

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.

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!

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

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

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

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

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

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.

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

Badfoot tries to steal a powerful artifact from Master Yo.

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

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

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

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

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

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

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.