Michael hates the changes that Dunder Mifflin's new owner is implementing, so he turns to David Wallace for advice. Jim and Pam find the perfect day care center, but Jim's mistake threatens to ruin the interview.

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.

A toast at Roy's wedding leads to Pam and Jim searching their relationships for buried secrets; Dwight reacts to Nellie's mandatory charity initiative.

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

Unemployed Andy crashes a fundraiser for the Senator and winds up adopting twelve disabled dogs. Dwight discovers that winning an auction means losing money, and Darryl teaches Nellie how to eat a taco.

Andy takes some of the office staff on a field trip to Gettysburg for inspiration. Meanwhile, the rest of the office, under orders from Robert California, are tasked with coming up with a new business idea for Dunder Mifflin. Kevin proposes several ideas that catch California's attention, although they are rather idiotic.

Robert California forces the office to throw a welcome party for Nellie, but the Party Planning Committee works on ways to sabotage it. Meanwhile, Erin tries to help Andy figure out a way to break up with Jessica.

Andy returns to the office to find Nellie in the manager's chair. Meanwhile, Kelly struggles to choose between Ryan and a new man.

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.

Pam’s warehouse mural is defaced. Darryl has difficulty dealing with the Jim's cleanliness habits in their apartment. Angela grudgingly allows Oscar and Kevin to attend her son’s first birthday party.

Pam and Jim prepare for Cece's baptism. When Cece goes missing, Jim fears Angela has taken her.

A documentary crew arrives at the offices of Dunder Mifflin to observe the employees and learn about modern management. Manager Michael Scott tries to paint a happy picture, while sales rep Jim fights with his nemesis Dwight and flirts with receptionist Pam.

Traveling salesman Todd Packer comes to Dunder Mifflin looking for a desk job in the office. However, the office is unsure if they want him to work there due to his previous behavior. After dealing with computer problems, Andy confronts office administrator Pam to get a new computer.

Andy takes a break from flambéing cherries and composing rock operas to jumpstart his Dunder Mifflin comeback. When Robert drunkenly shuts down a nearby branch, Jim and Dwight join forces to outsmart a salesman from Scranton’s uglier sister city.

Dwight offers free family portraits, and a stolen diaper leads to a high-speed car chase. With help from David Wallace, Andy goes undercover to try to get his job back. A new business opportunity arises for Robert California.

Two new, young employees throw Dwight and Jim off balance; Andy returns from leadership training with a desire for revenge.

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.

The adventures of Dwight at his family beet farm and bed-and-breakfast come to light. Here, he and his siblings receive a surprise inheritance. Back at the office, Todd Packer tries to atone for a lifetime of boorish behavior.

When Deangelo plays favorites, his management style is exposed.

The entire warehouse staff quits after winning the lotto, leaving Andy and Darryl to scramble for replacements while several of the office workers get a taste of the warehouse life.

Andy makes a game-changing decision and takes a road-trip odyssey in the name of romance. Elsewhere, Nellie arrives at the Scranton branch and sets out to seize the manager position.

The women of the office try to teach Dwight how to interact with female clients; Angela suspects the senator of cheating; Toby convinces some of the guys to grow mustaches.

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.

A woman who comes to the office to sell purses gets the male members of staff excited. She rejects Dwight's advances, but Michael reckons he's still in with a chance.

Jim and Pam return from their honeymoon and discover that Michael is dating Pam's mother, which infuriates her. Meanwhile, Dwight tries to install a recording device in Jim's office, by giving him a wooden mallard as an apology for their long rivalry.