The first prize of priority registration engulfs Greendale Community College in a Spring Fling paintball war.

When Jeff introduces an element of randomness into Troy and Abed's housewarming party, reality splits into six timelines.

A scheme to replace a corrupt cafeteria employee transforms the study group into a criminal gang run by a power-hungry Abed.

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

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.

Pierce and his closest friends are summoned to Hawthorne Labs to play a video game that will determine who will inherit his father's fortune.

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

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.

The students of Greendale are drawn into an epic pillow fight as Troy and Abed start a war that threatens to destroy their unique friendship.

When the yam the study group was growing for biology class is killed, Troy and Abed are on the case.

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

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 Dean Pelton films a new commercial for Greendale, the production takes a wild turn once he discovers that a famous alum has agreed to appear in it.

After Abed is caught trespassing at Greendale, he and his friends visit a psychiatrist.

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.

Pierce's funeral leaves the study group with mixed feelings, especially after their late tormentor leaves one last test to reveal everyone's secrets.

Jeff sets his sights on an attractive professor, and Annie looks to boost her social standing by hosting a Day of the Dead party.

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

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.

The former study group's future — and friendships — are put to a test when one chapter of their lives closes and a new one begins.

As Jeff is drafted to help lead Greendale's debate team against the formidable City College, Abed's film-class projects appear to predict the future.

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

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