When the semester starts, Jeff is stunned that his rejection of Britta has made her a campus star; Chang wants to be accepted into the study group.

When an old friend from Jeff's past appears unexpectedly, his friends discover that he was the one responsible for Jeff's disbarment.

A death provokes a fierce debate about Pierce's religious beliefs. Britta and Annie are at odds over tactics in the Gulf oil spill fund-raising drive.

Jeff and the group must salvage an aging museum exhibit that Dean Pelton wants as the centerpiece of Greendale's proposed aerospace training program.

Dean Pelton's army surplus party food sparks an outbreak of zombie-ism at the Greendale Halloween party.

Abed endears himself to the girls after he offers to take down their enemies on campus; Jeff and Troy stumble onto a groundskeeper's secret paradise.

Annie's missing pen leads to friction within the group.

When Jeff tries to obtain credit for a fictitious class, the unintended consequences rock Greendale. Abed and Troy build an elaborate blanket fort.

Troy's friends help him celebrate his 21st birthday.

The meaning of Christmas is lost and Abed's intense fixation on the holiday concerns the group in this special stop-motion animation episode.

With Chang pressing for membership in the study group, Annie's latest crush has Jeff reeling as Shirley unveils some stunning news.

Pierce's efforts to bribe director Annie may undermine the theater group's antidrug play; Jeff's texting prank puts Britta in an awkward situation.

Abed invites "Fat Neil" to play a game of Dungeons & Dragons with the rest of the study group, hoping to boost his confidence, after Jeff becomes concerned about him being a loner. When Pierce finds out he was not invited, he joins anyway, disrupting their plans.

On Valentine's Day, Troy and Abed compete for the attention of an assistant librarian, while Britta tries to show she's open-minded about lesbians.

Claiming that he is about to die, Pierce summons the study group to the hospital to bequeath his belongings to them.

For an upcoming vice-presidential visit, Glendale's Dean Pelton hastily organizes an election for student body president that pits Annie against Jeff.

Although Shirley and Andre don't want Chang involved with her baby, he resolves to be a good dad. Abed and Troy's new friend may be a war criminal.

Jeff and the group arrange a Pulp Fiction birthday party for Abed, but he has his own plans, starting with an expensive dinner for himself and Jeff.

Jeff is suspicious of Pierce's engagement to a pretty classmate. Troy invents a childhood trauma to impress Britta, and Abed challenges a professor.

Working on their final anthropology diorama, Chang finds a cache of items stolen by Troy's monkey that dredge up unhappy memories for the study group.

As the semester ends, the anthropology final is disrupted when Shirley goes into labor and her husband, Andre, is summoned to school for the birth.

A $100,000 paintball war prize pits members of the study group against one another, until they decide to join forces to stop a mysterious challenger.

As the paintball war is revealed to be a City College plot, Jeff and Troy vie for control of Greendale's ragtag army, while Pierce betrays the group.