Since the very first bedtime, all around the world, children have known that once their parents tuck them in and shut off the light, there are Monsters hiding in their closets, waiting to emerge. What they don't know is: it's nothing personal. It's just their job.
In the city of Monstropolis, skilled monsters employed to scare children are given a new target, but a hapless monster accidentally lets a human child into the secret world by mistake and the team must work to contain him.
Mike is obsessed with his new six-wheel drive car, and insists on showing it off to Sulley. Unfortunately for Mike, Murphy's law. Sulley plays with the adjustable power seat until an annoyed Mike asks him to stop. Mike starts the engine and hears the seatbelt reminder tone sound off.
A look at the relationship between Mike Wazowski and James P. "Sully" Sullivan during their days at Monsters University, when they weren't necessarily the best of friends.
Mike and Sulley are visiting Monsters University for the weekend to see how their Oozma Kappa fraternity brothers are doing. The group is throwing its first party, but no one has shown up. However, Mike and Sulley have a plan to liven up the house. Using a borrowed door station, they sneak into a party at the Roar Omega Roar fraternity and steal all of its food and guests to fill the Oozma Kappa house. The supply runs take them through the closet doors of a married couple's bedroom, repeatedly disturbing their sleep.
Ever since he was a kid, Tylor Tuskmon has dreamed of becoming a Scarer just like his idol James P. Sullivan, and now that dream is about to come true... or not. The day he arrives at Monsters Incorporated to begin his dream job as a Scarer, he learns that scaring is out and laughter is in! After being reassigned to the Monsters, Inc. Facilities Team, Tylor sets his sights on a new goal: figuring out how to be funny and becoming a Jokester.