Meet the Curtis

S1 E1: When the Diffys find a Caveman who stowed away in their Time Machine, they agree to make him a part of the family. But after Curtis attacks Mr. Hackett at school, Lloyd decides he must go. Lloyd gets lost while scouting a new location but Curtis' instincts lead Phil and Keely directly to him. In turn, Lloyd brings Curtis back home. Pim attends Debbie's sleepover.