With his law practice doomed, Jeff returns to Greendale to start a class action suit against the school, but a hologram of Pierce has him reconsider.

Abed tackles a two-day crash course on Nicolas Cage, while a clueless Jeff begins his teaching career with Annie as his most demanding student.

With the mysterious Ass Crack Bandit back at Greendale, Annie and Jeff are on the case. As clues and suspicions mount, Shirley delivers shocking news.

For Troy's last day at Greendale, Abed holds a campus-wide "hot lava" fantasy game. With a comic book worth $50,000 as the prize, it's an all-out war.

While Annie and Hickey's fight to get a bulletin board repaired spirals out of control, Abed and Britta go to war over spoilers of his favorite show.

Jeff counsels a smitten Duncan on how to get a date with Britta but is developing feelings of his own. An angry Hickey tries to teach Abed a lesson.

A new caste system takes over when Greendale beta tests an app that ranks everyone. Shirley loves her new status, but Jeff and Britta want it stopped.

Abed and Annie try to solve their new roommate dilemma with a retro VCR game, while Jeff, Shirley and Hickey hatch a plan to sell stolen textbooks.

To help Hickey be a more involved grandfather, which means patching up a bad relationship with his son, the gang creates an epic role-playing game.

Jeff's depression over turning 40 leads him to drink himself unconscious. In his dreams, he and the gang are part of the "G. I. Joe" cartoon team.

The Save Greendale Committee's success is short-lived when the board votes for a corporate sellout, but Pelton, Annie and Abed might find a solution.

To save Greendale from being sold, the gang searches for an eccentric computer science professor's legendary treasure hidden beneath the school.