In this latest interactive The Zula Patrol book, while pet-sitting the giant Zlorg family’s pet blob, Gloopy, the Zula Patrollers discover that villain Dark Truder is plotting to steal their entire Headquarters building and everything in it! With some help from Gloopy -- and two simple machines, the wheel-and-axle and the screw -- they manage to overcome the baddie and save their building. Read, interact and learn with this wonderful interactive book.