Troy and Abed compete for the attentions of the college librarian, while Britta strives to be progressive and befriends a fellow female student whom she believes is gay. Meanwhile, Jeff finds himself reluctantly hosting an impromptu party at his apartment when Professor Duncan invites himself over to watch a soccer match.

The episode was rated 8.01 from 1241 votes.

As the study group assemble their 20th and final diorama for their anthropology class, they reminisce about their favorite moments over the past year. Meanwhile, Troy's monkey reappears but disappears back into the ventilation system, leading Senor Chang to try to get the monkey and retrieve all their stolen loot.

The episode was rated 8.06 from 1305 votes.

It is Troy's 21st birthday, so the group decides to hit the bars. While Britta and Jeff are drinking too many cocktails, Shirley is taking down incriminating pictures of herself, Annie is embracing her fake identity and Abed gets into a deep conversation with another Sci-Fi lover.

The episode was rated 8.07 from 1289 votes.

Jeff falls into old habits after reconnecting with Alan (Rob Corddry), a former law firm colleague; Abed, Annie and Troy look for dirt on Alan.

The episode was rated 8.07 from 1334 votes.

Greendale prepares for the Vice President's visit. Dean Pelton organizes the first student elections, putting Annie against Jeff, Pierce, Leonard, and Star-Burns, among others. Meanwhile, Abed develops a friendship with special agent Robin Vohlers.

The episode was rated 8.08 from 1226 votes.

When Pierce lands in the hospital, he believes he's dying and gives the study group specific gifts that are actually meant to torment them. Britta wonders what to do with a blank check for "charity," Jeff ponders the idea of meeting his father, and Troy gets to meet LeVar Burton, while Abed films the whole thing for a documentary.

The episode was rated 8.13 from 1225 votes.

Annie's favorite pen goes missing, and she suspects that someone in the group took it. Then study room is put on lock down, and Jeff starts conducting the investigation. Troy and Abed are especially anxious to get out of the room in order to make it to the Greendale Puppy Parade in time.

The episode was rated 8.16 from 1364 votes.

Dean Pelton asks the study group to clean and refurbish the Greendale flight simulator. After an accidental launch, Abed must navigate a safe return.

The episode was rated 8.16 from 1313 votes.

As the new semester begins, the study group gathers to tackle Anthropology 101; Jeff struggles to establish decorum with Britta and Annie; Señor Chang decides to enroll as a student so he can join the study group.

The episode was rated 8.20 from 1398 votes.

Jeff incorporates Abed's love of cinema and pop culture, into a specially themed "Pulp Fiction" surprise birthday for him. But the tables are turned as Abed arranges another dinner with an unsuspecting Jeff at another eating establishment.

The episode was rated 8.29 from 1276 votes.

Pierce and a few other Greendale students ingest a biohazard substance at the school Halloween Party, causing them to exhibit flu-like symptoms and begin turning into zombies. It is up to the rest of the gang to save themselves and the school when Dean Pelton locks them in with the zombie-infected student body.

The episode was rated 8.32 from 1400 votes.

When Dean Pelton starts checking class schedules, he discovers that Jeff has listed a class that doesn't exist. Abed and Troy build an elaborate blanket fort.

The episode was rated 8.55 from 1417 votes.

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.

The episode was rated 8.66 from 1484 votes.

As the Greendale student body enjoys their year-end picnic, Dean Pelton announces plans for a small, quick, safe game of paintball. As the game heats up, alliances are formed - and broken - and friendships are put to the test. When a mysterious and threatening figure emerges on the Greendale campus, it becomes apparent that this is no ordinary game of paintball.

The episode was rated 8.78 from 1445 votes.

As the Greendale year-end paintball extravaganza continues, the game takes a dramatic turn with new intruders arriving on the scene. The study group realizes they must unite to defeat the enemy despite disagreements about strategy.

The episode was rated 8.83 from 1372 votes.