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.

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.

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.

Dwight tries to stop Darryl from moving to Jim's start-up company. Jim misses his daughter's first recital, to Pam's dismay. Nellie spills the beans about Pete and Erin.

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.

Jim convinces Dwight that he needs to choose someone to act as an Assistant to the Assistant Regional Manager; the two subsequently hold tryouts for the position. After her daycare turns away her child, Angela is forced to bring her kid to work. Andy auditions for "The Next Great A Cappella Sensation".

One year later, Dunder Mifflin employees past and present reunite for a panel discussion about the documentary and to attend Dwight and Angela's wedding.