When Yin and Yang start to change, Master Yo explains to them that they're going through Fooberty. Meanwhile, Pondscüm is going through some changes of his own. Will Yin and Yang learn to live with their new powers, or will Pondscüm be victorious?
This episode features Pondscüm as the main antagonist
Fooberty is a direct parody of actual puberty, and replaces some of the more common elements in humans with Woo Foo equivalents