You may have forgotten, but yes, a sequel to the beloved smash hit "Monsters, Inc." is indeed in the works, and last spring, it was even given a release date of November 16, 2012. However, not much has been heard since then as "Toy Story 3" arrived in theaters this past summer with great fanfare and looking forward a few months, Pixar will deliver another sequel in "Cars 2." But you can bet the studio is hard at work on "Monsters, Inc. 2," and now rumors are cropping up about the supposed plot for the film.
According to the admin post in the forums of French site Disney Plaza Central, "Monsters, Inc. 2" will go the prequel route with Mike and Sulley both enrolled at the University of Fear, telling the story of how they start off as enemies but soon become friends. Dutch blog Animatie followed up to try and find the source of the info and apparently it comes from a 2011/2012 catalog given to theater owners by Disney.
At this point, you can file it under a rumor, but it's an intriguing one. Pixar films notoriously go through many story changes and tweaks during the development process and we wouldn't be surprised if this turns out to be an early concept that somehow made its way through the cracks. But we'll have to wait and see and we'd wager by the time "Cars 2" revs into theaters, we might just get our first teaser from Pixar as to what's in store in "Monsters, Inc. 2."