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.
As Kevin and the rest of the crew worry about Kevin’s medical test results to see whether or not he has skin cancer, Michael gets angry because no one seems to have fun at the birthday party he threw for himself. Later, Michael takes everyone out to the skating rink to get their minds off of Kevin’s possible complications, and Pam and Jim go to the supermarket to pick up some presents for Kevin.
On the heels of Casino Night, Michael inadvertently outs a gay employee; Jim adjusts to his promotion, new office, and life without Pam.
In the hour long season four premiere, Michael hosts a Fun Run for the Scranton Business Park. A freak accident leads him to believe the office is cursed, and he questions his employees' religious beliefs. The office relationships are also explored, with Pam and Jim's new romance and Dwight and Angela's continuing relationship.
A mysterious person in the office has made a huge mess in the microwave and will not clean it up. Meanwhile, Michael has to come to terms with the fact that there have been certain personnel changes in his staff without his knowing.
Michael and Dwight go undercover to do a bit of industrial espionage on a paper company competitor. Meanwhile, the rest of the office holds a debate to settle the question: is Hilary Swank hot?
The entire office is preoccupied about rumors of Dunder Mifflin’s bankruptcy. Michael tries to create a distraction by engaging everyone in murder-mystery game, but Jim wonders if that is a good idea.
A banker representing a potential buyer comes to the Scranton branch to interview the H.R. department before the sale goes through.
Michael prepares himself for the good or bad news about Holly and her boyfriend. In an effort to be an "awesome" office manager, Pam decides to put up a resolution board for everyone to post their New Year's resolutions.
Michael trains Deangelo to take over his job of hosting the Dundie Awards, while Erin struggles with her dislike for her boyfriend, Gabe.