Dean Pelton lets two designers test their new social networking application at Greendale, leading to a war among the students; Professor Hickey decides to go underground until the battle ends.
Abed sets up a game of "Hot Lava" at the college as a going away present for Troy.
Annie gets Jeff to help her in the hunt for the "Asscrack bandit". One student returns from the dead, while Shirley comes with news of another persons death.
Jeff starts his position as a teacher. Abed gets the rest of the group to take a class about Nicolas Cage.
Jeff returns to Greendale a year after graduation on a mission. He meets the rest of the group and finds out what has happened to them since graduation.
Dean Pelton directs a commercial starring the study group and a collection of the school's most colorful characters. Abed, meanwhile, shoots a behind-the-scenes documentary of the entire affair.
As the new school year starts, the group is back together and choice to take Biology. Jeff and their ex-convict Biology teacher instantly start off on a bad foot, which leads to strife within the group. Meanwhile, Senor Chang is living in the air vents and is given a new position of authority from the Dean, who has to make cut-backs due to the intimidating Vice-Dean's choice on spending arrangements.moreless