Zack accidentally removes Deuce's stink – the essence of what it means to be a butt. But then he notices Deuce and Eleanor getting a long better. Somehow the lack of stink is spreading harmony. So Zack crops dusts the town with his new stink-removing invention. Now the butts are stink-less. And that‟s when the trouble begins. The stink of the butt was keeping all sorts of weird creatures at bay, and unleashing them sets off a butterfly effect of cataclysmic proportions. Zack has gotta make the butts stink again. / Zack, Eleanor, Silas, and the B-Team all compete on a Fear Factor-like reality show in the sky. But it's a trap set by the Great White Butt. Only no one believes Zack and assumes he's just gaming them. So Zack has to save the world all by himself. What else is new?