Sully and Mike work at the local power plant which powers the entire monster world with the screams of children, which they extract. When they cross over into the human world, through closet doors, they find a little girl, only known to them as Boo, who has accidentally wondered into their world and is causing all sorts of mayhem.
Now it's up to Mike and Sully to race against time and their bad apple of a co-worker Randall, voiced by Steve Buscemi, in order to get Boo back to her own world, before she destroys theirs!
This film is a fun, sometimes a little scary and touching adventure, which is definitely one for the entire family to enjoy. Be on the lookout for a cameo from Rex the Dinosaur from Toy Story and with Disney's announcement of Monster's Inc. getting a 2013 theatrical re-release in 3D a month before the release of its prequel, Monsters University, it's definitely one to watch out for.
Monster's Inc. is rated G, for general guidance, with some scenes, which may frighten young children and was originally released on VHS and DVD in 2002.