Two young employees arrive, but the staffers label them as new versions of Jim and Dwight. Meanwhile, Andy returns from leadership training and targets Nellie for revenge; Oscar mulls over adopting Angela's cat; and Kevin saves a turtle.

The wedding toast of Pam's ex-fiance Roy causes Pam and Jim to examine their relationship for buried secrets. Dwight stubbornly protests Nellie's mandatory charity initiative by supporting the Taliban and agreeing to live by their severe laws. Clark hits on Erin by dangling a fake newscaster job; Andy also takes the bait.

Andy flaunts his genealogy when he discovers he's related to Michelle Obama. Meanwhile, Darryl struggles in his new post; Dwight teaches Erin a new language to wow her boyfriend's family; and Nellie tries to persuade Pam that Jim's having an affair.

The staffers hit the road in a rented bus when the building is deemed unsafe. Meanwhile, Nellie reaches out to Andy for help in adopting a baby, and Jim uses pie to spread cheer to Pam.

It's Halloween in the office and Andy invites his college a cappella group to perform, which leads to a confrontation with his frenemy Broccoli Rob. Meanwhile, Dwight finds evidence that a madman is loose in the office and tries to track him down, and the first meeting of Jim's new job causes a fight with Pam.

Money problems plague Andy's family. Meanwhile, Dwight guests on a local radio show, so the staffers harass him with outrageous phone calls; and Kevin unearths a big secret about Oscar.

Dwight faces his greatest professional shortcoming - selling to women. As a result, the lady staffers step up to give him advice so he can successfully sell to an important female client. Meanwhile, Angela suspects her paramour is cheating; Andy uses technology to connect with the others from his boat; and Toby tries to convince the men to grow mustaches.

Angela discovers the harsh truth about her husband's affair with Oscar, so she reaches out to Dwight for help. Meanwhile, Jim requests a favor from Stanley and Phyllis; Pam begins painting a mural in the warehouse; and Pete creates a tower made out of complaint cards.

When the office holiday party fizzles, Dwight throws a traditional Schrute German Christmas. Meanwhile, Darryl suspects that Jim has forgotten to include him in a new job opportunity in Philadelphia, and Pete teaches Erin about the film "Die Hard".

Pam accidentally brings lice into the office and lets Meredith take the fall, while Dwight vows to destroy the parasites. Meanwhile, Jim has a fantastic day in Philly wooing a potential business associate. Meanwhile, Phyllis, Nellie and Kevin meddle in Darryl's love life.

Clark brings an espresso maker to the office, and the staff embraces the new device. Meanwhile, Dwight and Clark pretend to be a father-and-son duo to land a sale; and Darryl goes on an interview at Jim's company, where Pam drops by unexpectedly.

Dwight tries to stop Darryl from moving to Jim's start-up company. Elsewhere, Jim misses his daughter's first recital, to Pam's dismay; Nellie spills the beans about Pete and Erin. Also: A behind-the-scenes look at the documentary comes into view.

Dwight is tasked with hiring a part-time salesman to be Jim's substitute, so he rounds up a supergroup of his cronies, including his oddball beet-farmer cousin, Mose; Pam is left wondering who her new deskmate will be; Erin seeks her birth parents with help from Pete.

Pam’s warehouse mural is defaced — when Pam asks the office to help her track down the vandal who defaced her mural, Dwight and Nellie spring to action. Darryl has difficulty dealing with the cleanliness habits of Jim in their shared Philly apartment. Meanwhile, Angela grudgingly allows Oscar and Kevin to attend her son’s first birthday party.

The staffers pair up as faux couples to score a Valentine's Day discount at a mall. Elsewhere, Erin tells Pete that she'll break up with Andy when he returns, yet Pete has his doubts. Also: Jim and Pam socialize with the documentary's soundman.

Pam tries to land a job in Philadelphia and has an interview with a strangely familiar manager. Meanwhile, Dwight goes on a quest to clean his aging aunt, and Andy returns from his epic boating odyssey.

The adventures of Dwight at his family beet farm and bed-and-breakfast come to light.

Everyone in the office is excited when promos start running on TV for the documentary. - Philadelphia Phillies Ryan Howard guest stars.

The office workers are forced to walk up the stairs when the elevator's power goes out, a situation everyone deems the "Stairmaggedon". Dwight coerces Stanley into doing an important sales call. Pam and Jim find comfort in talking with Nellie and Toby about marital troubles. Meanwhile, Angela supports her husband.

Dwight and Angela participate in a paper airplane contest and compete against each other. Meanwhile, Andy prepares for a potential acting job, and Jim and Pam utilize new skills.

Andy works up the courage to quit his job and pursue his dreams of stardom. Meanwhile, Dwight at last earns his karate black belt and delights in his best day at the office; and Jim returns to Scranton in a bid to have quality time with Pam.

As the office readies for the premiere of the documentary that night, Jim convinces Dwight, who is planning to propose to Esther, that he needs an Assistant to the Assistant Regional Manager, and holds tryouts to find the best candidate. Angela brings her baby to work after her daycare turns her away. Meanwhile, Andy attends auditions for 'The Next Great A Cappella Sensation'.

As the office readies for the premiere of the documentary that night, Jim convinces Dwight, who is planning to propose to Esther, that he needs an Assistant to the Assistant Regional Manager, and holds tryouts to find the best candidate. Angela brings her baby to work after her daycare turns her away. Meanwhile, Andy attends auditions for 'The Next Great A Cappella Sensation'.

Months after the airing of the documentary, the workers of Dunder Mifflin, past and present, gather for a wedding and a final round of interviews. Mysteries are solved, hatchets are buried, pranks are prunked.

Months after the airing of the documentary, the workers of Dunder Mifflin, past and present, gather for a wedding and a final round of interviews. Mysteries are solved, hatchets are buried, pranks are prunked.