Part 1 of 2. The Dunder Mifflin staffers participate in a weight-loss program, only to become overly consumed with shedding pounds. Elsewhere, Michael works on building a friendship (and more?) with the new HR worker (Amy Ryan). And Pam attends art school in New York, leaving behind a pining Jim.
Conclusion. The desk jockeys' efforts to shed pounds in a corporate weight-loss challenge progresses. Meanwhile, Michael continues to build an awkward friendship with Holly; and a geographically separated Jim and Pam agree to meet one another.
Holly presides over a business-ethics meeting in the wake of Ryan's corporate scandal, but the seminar breaks into chaos when Michael allows the staffers to opine openly about workplace malfeasance. Elsewhere, Jim coerces Dwight to adhere to Dunder Mifflin's "time theft" policy.
After thieves prey on the office, Michael takes a bite out of crime by holding an auction to raise funds to replace the stolen items. Elsewhere, Pam aims to land a part-time job at corporate to pay for art school; and Michael and Holly anticipate their date night.
The annual customer-survey report delivers shocking results, particularly for Dwight and Jim. Meanwhile, a separated Jim and Pam try to spend all their time together via their phones. And Angela and Andy's wedding plans move forward, as they choose an unlikely destination for their big day.
Dunder-Mifflin bigwig David Wallace (Andy Buckley) sends Michael on a business excursion to Canada with Andy and Oscar, who form an unlikely bond. Meanwhile, Jim eagerly anticipates Pam's return from art school.
Dirt is dished over a dirty dish: Tension boils over when a mysterious someone leaves a culinary mess in the office microwave. Meanwhile, Michael has trouble accepting that personnel changes were made without his knowledge.
The staffers jingle all the way at a Moroccan-themed holiday bash, but tensions flare when Meredith's hair catches fire. Dwight's fired up as well: He becomes consumed with the hottest toy of the holiday season.
Thanks to Michael's running mouth, Andy finally learns that his beloved Angela had an affair with Dwight, a discovery that incites the two romantic rivals to square off. Elsewhere, Michael is on edge about a corporate appointment with bigwig Wallace (Andy Buckley).
Part 1 of 2. Dwight's fire-safety seminar goes up in smoke. Meanwhile, the staffers try to secretly view a bootleg Hollywood flick at work, and Michael throws a comic roast of himself. Jack Black, Jessica Alba and Cloris Leachman guest star.
Part 1 of 2. With Pam as his driver, Michael goes on a speaking tour to other Dunder-Mifflin branches to share insight about Scranton's relative success. At the office, Dwight and Jim fumble as new party planners when they forget a birthday. And Andy looks for love in all the wrong places.
Conclusion. Accompanied by Pam, Michael continues his speaking tour of various Dunder-Mifflin branches, with the Utica division offering a valuable life lesson for Michael. Meanwhile, a surly Scranton staff makes party-planning tasks difficult for Dwight and Jim; things get catty over Angela's new feline.
Cupid's arrows fly in Scranton on Valentine's Day when Michael encounters an enigmatic lady at a blood drive. Meanwhile, a "lonely hearts party" at the office yields potential romances for Dwight and Kevin. And Pam and Jim share an uncomfortable lunch with Phyllis and Bob Vance (of Vance Refrigeration).
Office problems spread when Michael suggests placing "golden tickets" inside paper packages as discounts for clients. Elsewhere, Kevin sets out to woo a woman---so Andy, Jim and Pam step up to give him (very different) pointers.
Michael plans for his big 15th-anniversary party at the branch, but the celebration fizzles when he encounters the new vice president (Idris Elba), who comes with direct, no-nonsense concepts. In other events, Jim pulls yet another prank on Dwight, but this time with a surprising outcome.
Michael's relationship with the new vice president (Idris Elba) becomes more and more strained, but that doesn't stop Michael from shirking work and responsibility even more than usual. Meanwhile, Pam falls victim to the new copier; and Kelly develops yet another crush.
Following his bumpy first meetings with new boss Charles (Idris Elba), Jim finds himself squaring off with the bigwig in a soccer game in the parking lot. Meanwhile, Michael fears the new workday, so much so that he's barely able to leave his house. But that doesn't stop him from assembling his "dream team."
Former romantic rivals Dwight and Andy form an unlikely kinship and plan a hunting trip together. Meanwhile, supervisor Charles demands a rundown from Jim---but Jim has no clue what "rundown" actually means. And Michael holds a Paper and Pancakes company luncheon, but it might end up as a flat affair.
In his new endeavors, Michael faces mounting financial difficulties and problems with early-morning deliveries. Meanwhile, Angela plays enforcer as the staffers try to finish their expense reports on deadline.
A conflict erupts in the new sales group, with mediator Michael landing square in the middle of the dispute. In other developments, the office drones take a relaxed attitude to new heights during "casual Friday."
Season 5 closes with the staffers attending the annual Dunder Mifflin company picnic, where Michael and ex-flame Holly (Amy Ryan) reunite. Elsewhere, the Scranton branch tries to outwit, outplay and outlast the competition in a volleyball tournament. Idris Elba guest stars.