Mike (Crystal)--a little green guy with one huge eyeball, and Sulley (Goodman)--a big purple and blue fuzzy guy with dinosaur spikes down his back both work at Monsters, Inc., a gigantic corporation that captures the screams of little children and turns them into energy. To make the children scream, the monsters must enter each child's bedroom through the closet door, then deliver a frightening affront. The only problem is, kids aren't scared anymore.