
Set in Monstropolis, a thriving company town where monsters of all shapes and sizes reside, the film follows the monstrous misadventures of James P. Sullivan (John Goodman), known to all as "Sulley", and his best friend, roommate and co-worker Mike Wazowski (Billy Crystal). Both work at Monsters, Inc., the largest scream-processing factory in the monster world, where Sulley is the top kid Scarer and Mike is his enthusiastic Scare Assistant. The main power source in the monster world is the collected screams of human children.