Yin and Yang have their army, but their army is less than organized and/or effective. Thankfully, Coop has come to lend his hand to their efforts. Not only does Coop now have control of the evil that once dominated his personality, he can now use his powers to combat evil instead of serving evil, and that makes Yin fall in love with Coop again! But the love between Coop and Yin is distracting them from helping the other Woo Foo Warriors fight. Will Coop and Yin realize the errors of their ways, get their act together, and stop Eradicus' Minions from leading a new Night Master army from destroying their town?