Adventure, Fantasy, Comedy | 25 August 1989

Fred Savage, Howie Mandel, Daniel Stern

A young boy is scared of the monster under his bed. He asks his 6th grade brother to swap rooms for the night as a bet that the monster really exists. Soon the brother becomes friends with the monster and discovers a whole new world of fun and games under his bed where pulling pranks on kids and other monsters is the main attraction.