There is a monster living in the closet of a young boy named Tommy. Every night, the monster comes out and scares Tommy, making him too afraid to sleep. Tommy's parents don't believe him when he tells them about the monster, so he decides to take matters into his own hands.
One night, Tommy bravely confronts the monster in the closet. To his surprise, the monster turns out to be a friendly creature who just wanted a friend to play with. Tommy and the monster become fast friends, and Tommy is no longer afraid of the dark.
From that day on, Tommy and the monster in the closet have many adventures together, and Tommy learns that sometimes things are not as scary as they seem at first glance.