Billy Crystal has shared new details about Pixar's upcoming sequel Monsters University with Entertainment Weekly. The movie was officially described as follows earlier this summer:

Mike Wazowski and James P. Sullivan are an inseparable pair, but that wasn't always the case. From the moment these two mismatched monsters met they couldn't stand each other. "Monsters University" unlocks the door to how Mike and Sulley overcame their differences and became the best of friends.

"[Mike and Sully] end up in the same fraternity where they have this scare competition — like Greek Games in college," Crystal told the magazine. "They have to mobilize a group, sort of like Revenge of the Nerds-monsters, and get them ready to be scary."

He added that, in the June 21, 2013 release, "They're 17 and 18 years old in the script. My guy has a retainer, even."

You can check out the previously-released teasers here and images are available here.