Jeff gets kicked out of the group’s Biology class by their reformed prisoner teacher. Pierce who was out of the group takes Jeff’s spot and gets reinstated. Jeff can’t get back into the class and slowly starts to go crazy without the study group. Eventually he takes the high road and allows Pierce to keep his spot in the class and vows to get back into the class and into the group on his own merits. Britta and Troy help Abed cope with his favorite show pushing to midseason. The dean discovers Greendale’s Air Conditioning annex makes 80% of the school’s money and their evil dean is more powerful than he is. Chang joins campus security for room and board when the dean is forced to cut the school's budget.
As Annie (Alison Brie) competes with an overachieving rival in a Model United Nations competition, Jeff (Joel McHale) wrestles with his feelings for his ambitious friend. Meanwhile, Britta (Gillian Jacobs) finds herself at odds with Chang (Ken Jeong) when she is torn between her newly conventional life and her rebellious past.
The study group struggles to incorporate a fellow classmate while working on a project for Professor Kane’s (guest star Michael K. Williams) class. Meanwhile, Chang (Ken Jeong) causes a fire while trying to solve a strange mystery of his own making.
When Jeff (Joel McHale) introduces an element of randomness into Troy (Donald Glover) and Abed’s (Danny Pudi) housewarming party, reality splits into six timelines in which the group’s complicated relationships play out in different ways.
When Britta (Gillian Jacobs) finds that an anonymous personality tests suggests that one of them is a homicidal maniac, the study group members use a series of scary Halloween stories to expose the killer.
When a drag queen’s song makes Hawthorne Wipes an iconic gay product, Pierce (Chevy Chase) embraces it – until his homophobic dad Cornelius (guest star Larry Cedar) shows up to squelch the idea. Meanwhile, Vice Dean Laybourne (guest star John Goodman) recruits Troy (Donald Glover) for his air conditioning repair school.
Joel McHale
Jeff Winger
Gillian Jacobs
Britta Perry
Danny Pudi
Abed Nadir
Alison Brie
Annie Edison
Ken Jeong
Ben Chang