Muzzy the friendly green clock-eating monster from outer space returns for more adventures with his friends in Gondoland. Everyone expects him and King Nigel with Queen Ezra decide to make a ball for Amanda's christening.[clarification needed] Meanwhile, Corvax invents an invisibility device and with the help of a servant named Thimbo, a thief on parole, plans to kidnap Amanda, Bob and Sylvia's daughter to avenge Bob for tricking him and taking Sylvia away from him.