When they're not hiding under the bed or lurking in the closet, the monsters that scare human children live and work in the city of Monstropolis. When monsters Mike and Sulley accidentally let a human girl sneak into Monstropolis, they must return her home before anyone notices - or they might lose their jobs at Monsters, Inc.! Plus, all-new Monsters, Inc. tales! It's that time of year again: Humanween, Mike's and Sulley's annual costume party - where monsters dress up as humans! This time the annual party is at Mike and Sulley's home...but Mike goes into panic mode when he learns of an unplanned visit from...his mother! Then, when Mike forgets a special date he promised his girlfriend, can he get his relationship off the rocks with a little help from his pal Sulley? COLLECTING: Monsters , Inc . 1-2; The Humanween Party ; A Perfect Date