Having failed in his second go-round as a lawyer, and unable to gather evidence for a potential lawsuit against Greendale, Jeff tries to convince the other former members of the Study Group to sue the school.
Jeff blows off his new teaching job at Greendale until Annie signs up for his class and forces him to teach, and Abed loses his religion when he takes a course about whether Nicolas Cage is good or bad.
The college is imbued with panic when an unidentified person returns to dropping coins down people's butts and Annie takes it upon herself to find out who is behind it all.
After Pierce's unexpected passing, a team of investigators headed by the no-nonsense Mr. Stone arrives at Greendale to subject the study group to lie detector tests before they can be considered for distributions under the will.
As a going-away present to Troy before his around-the-world trip, Abed sets up a high-stakes game of "Hot Lava" at the college, but Britta suspects that the game is just masking his real feelings about Troy's departure.
Annie and Hickey fight Greendale bureaucracy to install a bulletin board, Abed learns a lesson about sign language, and the others discover the challenges of planning a properly sensitive school dance.
Whilst cleaning the storage room Jeff, Hickey and Shirley find a pile of unused hidden textbooks and plot a way to make the best out of it. Meanwhile, Annie and Abed are trying to find a new roommate.
The entire group becomes part of the cast of a classic "G.I. Joe" cartoon from the 1980s, which turns out to be part of Jeff's coping mechanism as he deals with a monumental life event.
After a liability audit, the Save Greendale Committee discovered that they have, in fact, saved Greendale - until they discover that as a result of the successful audit, the school is being sold to Subway.
When the group learns about Greendale's first dean, they embark on a mission to find his old computer lab; Subway enlists Chang to spy on the group as part of its plan to take over the school.
