Sulley and his gang from "Monsters, Inc." have returned in a first ever teaser for "Monsters University". This time, the friendly furry blue monster takes his hilarious gang to college. Instead of studying, however, they throw a rave party in what looks like a dormitory. The only one who looks so serious about the college thing is the green monster Mike, AceShowbiz reported.

James P. Sullivan and Mike Wazowski 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. The upcoming movie will unlock the door to how Sulley and Mike overcame their differences and became the best of friends.

Walt Disney Pictures will unleash "Monsters University" in the United States on June 21, 2013. Lining up in the voice cast ensemble are such actors as Steve Buscemi, Billy Crystal, John Goodman, John Ratzenberger, Frank Oz, Dave Foley and Joel Murray.