Jan comes into the Scranton Branch to give all the female employees a group seminar on women in the workplace. Upset that he is not allowed in on the proceedings, Michael takes all the men of Dunder Mifflin down into the warehouse for some "guy time" with the warehouse workers. Pam is offered a chance to pursue her dreams of drawing and Roy confronts Jim about his feelings for Pam.
When Michael visits Dunder Mifflin corporate headquarters in New York on Valentine's Day, he and Jan are both in for a surprise. Meanwhile, back in Scranton, the office staff celebrates Valentine's Day grade school style.
A routine office day is changed when children come to Dunder Mifflin for "Take Your Daughter to Work Day." Michael is surprised when he strikes up a friendship with the five-year old daughter of his sworn enemy, Toby. Pam is desperate to befriend her colleagues' offspring and a misunderstanding puts Ryan under Stanley's thumb
Michael apologizes to Oscar, after he finds out he's gay, for calling him a homosexual slur--but his apology outs Oscar to the entire office. And Jim decides to take a promotion at the Stamford office.
Michael and Dwight go to a convention in Philadelphia and run into Jim, and Michael becomes jealous of Jim's relationship with his new boss. Meanwhile, Pam gets ready for her first date since her engagement.
Michael is in trouble once again as Jan busts him for declaring it's "Movie Monday" where everyone watches a movie and neglects work. Angela pushes Dwight to make a move on Michael's job while Pam and Jim find creative ways to waste time.
Michael encourages the entire Scranton branch to support Kelly and attend a local celebration of Diwali, the Hindu Festival of Lights. Meanwhile, Andy convinces Jim to turn a late night of work into a drinking game.
When Jan tells Michael that the Scranton Branch will be shutting down, Michael strives to keep his staff's spirits up. Meanwhile, everyone privately begins to envision how their lives will change in the aftermath.
Jan informs Michael that the Scanton branch of Dunder Mifflin will be merging with the Stamford Branch. Jim and Pam are reunited while the other employees of both branches must adjust to their new co-workers.
Trouble among the members of the party planning committee results with the office having two competing Christmas parties, but Michael isn't interested in celebrating because he has just broken up with his girlfriend.