Usually the other zombies in ZombieZoo(r) (The place where cute & creepy animals live) know where Boo is or where he is going. Most of the time they can find him resting peacefully in his tree. But sometimes he just disappears. Then nobody knows where he is, or if he's coming back for snacks. Muck. Rob, Stich and Toxic decide to find out where Boo goes. But their well-meaning curiosity brings about new discoveries in the world of ZombieZoo