Lovable Sulley and his wisecracking sidekick Mike Wazowski are the top scare team at Monsters, Inc., the scream-processing factory in Monstropolis. When a little girl named Boo wanders into their world, it's the monsters who are scared silly, and it's up to Sulley and Mike to keep her out of sight and get her back home.
The story heavily emphasizes the importance of friendship and the strong bond between the main characters.
Some scenes may be mildly scary for very young children, featuring monsters and suspenseful moments.
There are a few instances of comic, non-graphic violence that are mostly played for laughs.