Jeff's plan to keep Pierce out of the Study Group backfires when he gets kicked out instead, Abed copes with bad news about Cougar Town, and Dean Pelton's authority is challenged by another Greendale dean.
When another over-achieving student steals Annie's idea for a Model U.N. club, the Study Group comes to her rescue. Meanwhile, new security cop Chang tries to stop Britta's last-ditch efforts to create a campus disturbance.
Chaos ensues when the Study Group tries to divide itself up into biology lab partners, and Chang appoints himself security "detective," and tries to solve a mystery that is only in his head.
At Abed and Troy's housewarming party, Jeff decides to let the decision on who gets the pizza rest on a dice roll, leaving Abed to contemplate six alternate realities.
During her pre-Halloween party, Britta gets everyone to tell a spooky story so that she can find out which member of the study group scored out as a psychopath on their psychology profiles.
Pierce gets a visit from his bigoted father after his wipes become a hit in the gay community, and the dean of the School of Refrigeration recruits Troy to become his student.
The dean is given the task of making a Greendale commercial, but the shoot soon goes over budget and spirals out of control - with Abed documenting the experience.
Shirley teaches Jeff foosball so that he can beat a team of cocky, obnoxious Germans, while Annie creates an overly elaborate ruse so that she doesn't have to tell Abed that she broke his special edition The Dark Knight DVD.
A holiday-themed parody of "Glee" in which Abed tries to persuade each member of the Study Group to join the glee club so that they can qualify for regionals.
Pierce comes to Shirley with a business proposal just as she's about to get married to Andre. Meanwhile, Troy and Abed try to act "normal" for the wedding, Britta discovers a new skill, and Jeff struggles with his toast.
The members of the Study Group take jobs as celebrity impersonators to pay off Abed's debt to a celebrity impersonator business, but can Jeff be Ryan Seacrest without his fragile ego spiral out of control?
While Britta struggles to stay away from her old carny boyfriend, Jeff becomes obsessed with their relationship. Meanwhile, the dean stops by Troy and Abed's to recruit Troy for the dean of the school of refrigeration.
A fellow student has died and Biology class has been canceled, meaning everyone has to retake it in summer school. When the memorial service turns into a riot, Chang is granted special authoritative powers.
When Abed claims the Dean has been replaced by a doppelgänger he is forced to take psychiatric treatment. Naturally, the rest of the study group joins him at his session with Dr. Heidi.
The study group must help Pierce win a video game so that he can claim his inheritance from his father, but somebody may be out to ensure that he loses.
Jeff faces an old nemesis as Shirley and Pierce square off in Greendale court, Abed succumbs to his evil alter ego, and Troy decides to meet his destiny at air conditioning school.
