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.

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.

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.

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.

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

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

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.

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.

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

The study group helps Abed land a date with a girl, and Jeff squares off with a P.E. coach who insists that he wear gym shorts to a billiards class.

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

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.

The study group stages an elaborate heist to break in to Greendale and free Dean Pelton from the clutches of Chang.

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

Jeff agrees to represent Shirley in a case against Pierce to determine official ownership of their new sandwich shop.

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

Annie has second thoughts about moving in with Troy and Abed once she realizes that they expect her to live in a blanket fort.

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.

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.

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

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.

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 a personality test suggests that one group member is a homicidal maniac, they use a series of scary Halloween stories to expose the killer.

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

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

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

After sending Troy and Britta on a date, Annie volunteers to keep Abed company in his Dreamatorium.

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.

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

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

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.

A 19-foot plaster hand guides the group on an emotional journey as they travel through mountains and flashbacks while aboard Elroy's RV.

A hacker angry over a racist comic's planned campus performance threatens to publish the activity committee's personal emails.

Visiting Professor DeSalvo gives Jeff and his friends a master class in grifting and a bonus lesson on the art of revenge.

A commercial catchphrase catapults Chang to viral fame and a life-changing move. The group bands together to make movie magic for Abed.

New administrative consultant Frankie's strict — and sobering — changes split the group when Abed goes rogue to side with the enemy.

Jeff's depression over turning 40 leads him to drink himself unconscious. In his dreams, he and the gang are part of the "G. I. Joe" cartoon team.

Dean Pelton prompts the study group to use puppets to relive the traumatic events of a recent adventure.

When prisoners roll into Greendale via telerobot, Jeff meets his match in a clever convict. Britta's plans for a raging house party backfire.

Britta's ex-boyfriend, Rick, returns, reigniting her far-fetched dreams of a normal relationship. Annie goes to extremes to win Elroy over.

When Dean Pelton loses himself — and a chunk of the college budget — in a virtual reality system, Jeff seeks help from its cantankerous inventor.

A rival's attack ad puts the group into defensive mode — and a moral quandary. Britta and Chang find new ways to gross everyone out.

Dean Pelton enlists the study group to beautify the campus to woo a wealthy student to Greendale. A class on teaching P.E. pits Shirley against Troy.

As Jeff competes for spots in an overbooked 'History of Ice Cream' class, Abed copes with the looming end of their time at Greendale by retreating into a surreal mental 'happy place', while Annie and Shirley engage in school-wide pranks.

Dean Pelton's sexuality gives him an uncomfortable edge for a school board seat. Chang scores a surprise win in a stage adaptation of "The Karate Kid."

On the way to a Halloween party, the study group must free Pierce from his panic room and slowly comes to suspect that his mansion is haunted.

The Save Greendale Committee's success is short-lived when the board votes for a corporate sellout, but Pelton, Annie and Abed might find a solution.

The study group contends with a group of German students who take over the study room. Chang makes his return to campus.

With his law practice doomed, Jeff returns to Greendale to start a class action suit against the school, but a hologram of Pierce has him reconsider.

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.

When two Greendale students get married, the wedding reception takes a turn after Jeff unwittingly exposes an inconvenient truth.

Troy worries about losing Abed to a fellow Inspector Spacetime fan at a convention for the show, while Annie fantasizes about being married to Jeff.

Jeff counsels a smitten Duncan on how to get a date with Britta but is developing feelings of his own. An angry Hickey tries to teach Abed a lesson.

When the legitimacy of his degree is challenged, lawyer Jeff Winger must return to school, where he meets a clan of misfit community college students.

Britta joins Jeff to see his estranged father on Thanksgiving. Shirley invites the rest of the group to spend the holiday with her judgmental in-laws.

Greendale comes together to get to the bottom of Chang's amnesia, which Abed films as a documentary. Jeff, however, suspects Chang is faking it.

While a tasteless prank ends with Pierce being tossed out of the group, Britta and Jeff are forced to team up against some teen newcomers at school.

Jeff accepts an invitation to be the editor of the school paper as he and his friends fend off an interloper who wants to join their study group.

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

Jeff organizes a lovely holiday gathering at his apartment, but Annie secretly invites Professor Cornwallis to get in his good graces.

As Jeff tries to keep Pierce from rejoining the study group, Dean Pelton faces off with Vice Dean Laybourne for control of Greendale.

While Jeff looks to use a Spanish class assignment to get close to Britta, Pierce has something altogether different in mind.

Abed and Annie try to solve their new roommate dilemma with a retro VCR game, while Jeff, Shirley and Hickey hatch a plan to sell stolen textbooks.

When Shirley's remarriage to Andre threatens to put her dreams of starting a business with Pierce on hold, Britta steps in.