Yin! Yang! Yuck!: Yin wishes Yang would stop being so aggressive and Yang wishes Yin would stop being so bossy. They clash and Yin loses her magic and Yang loses his aggression. The result is Yuck, a spawn off of Yin's bossiness and Yang's aggrssiveness. They decide to head to the dojo, and Yuck wants to be the best Woo Foo warrior ever. Yo kicks them all out and Yuck still wants to be trained. He fights Yin and Yang to see who Yo will train. Yuck overpowers them and goes the dojo where he attempts to beat the Woo Foo knowledge out of Yo. Before he attempts to finish off Yo, Yin blasts Yuck with a Foo Field. They run to the store and there they use a plan to get rid of Yuck. Yin gets back her bossiness and Yang gets back his aggression. But Yuck isn't gone forever. His spirit flies off.
Beetlemania: Yin and Yang are fighting a Trollgre for the knife and fork he wanted. Yin uses kindness to get them from him. When they get back to the dojo, Yo gets ready to go to the fair for the pie eating contest to keep his title as champion. Meanwhile, Yang falls in love with Lina and leaves Yin by herself. Lina tells Yang about the big bug problem she and her dad have on their farm. Yang decides to help. But when he finds out it is made of steel, he is in for more of a challenge. Yang tries to weaken it by trying to wear it down. Yin sees he is in trouble. She arrives and agrees to help Yang out if he tells Lina the truth. Yang confesses that he lied and Yin and Lina help Yang out. Just before the beetle attacks again, the Trollgre comes in and smashes the steel beetle. Yo wins the pie eating contest against Kraggler and keeps his title.