Season four marked the departure of Karen Filippelli as a regular character, although she appeared for a few seconds in the first episode, "Fun Run" and in the sixth episode, "Branch Wars", as the regional manager of the Utica branch. Relationships again emerged as the main theme of the season, with Jim Halpert and Pam Beesley's rising, and Michael Scott and Jan Levinson's, as well as Dwight Schrute and Angela Martin's declining. Technology was another prevalent theme as the office staff struggled with initiatives introduced by Ryan Howard to modernize the company.
Michael comes to believe the office might be cursed in the wake of a freak accident. After scrutinizing each of his staffers' religious beliefs, he organizes a charity 5K "fun run."
Michael organizes a charity 5K "fun run." Meanwhile, the status of two office romances comes to light.
Ryan returns to Scranton with a plan to bring Dunder Mifflin into the digital age by launching a new website - Dunder Mifflin Infinity. Michael is worried about ageism and attempts to win back clients using old fashion business skills. Relationships are on the forefront as Ryan returns to an eager Kelly, Jim and Pam are outed to the office, and Angela is still upset with Dwight about her cat.
Corporate young gun Ryan continues in his efforts to drive Dunder-Mifflin into the digital age.
Michael gleefully anticipates attending the company's Web-site launch party in New York. Meanwhile, Angela arranges a bash in Scranton, while Dwight gets wrapped up in a real paper chase: He tries to sell more paper than the Web site.
The company continues efforts to launch its Web site, as Angela throws a bash in Scranton and Michael gleefully anticipates attending a launch party in New York. Meanwhile, tight Dwight continues his paper chase: He tries to sell more paper than the Web site.
Michael is quickly going into debt with Jan renovating his condo. Meanwhile, it's a barn burner when Jim and Pam check in to the Schrute family farm, which has been converted into a bed-and-breakfast.
Michael continues to face his financial woes.
After a video team is brought to the office to create a commercial for the company, Michael decides that the employees of the Scranton branch of Dunder Mifflin can create a better commercial. While the majority of the staff work on the commercial, Dwight, still depressed from his break-up with Angela, instead chooses to play a computer game.
Karen tries to "poach" Stanley from Dunder Mifflin Scranton, and Stanley informs the branch that he is leaving. In revenge, Michael and Dwight trick Jim into traveling to the company's Utica branch, where the group attempts to play a prank on Karen. Back at the office, Pam, Oscar, and Toby try to hold a club meeting, with disastrous results.
Michael goes on a survival adventure into the woods - with nothing except the suit on his back - in retaliation of not getting an invite to a similar party from corporate. Back at the office, there is a birthday going on while Jim tries to revolutionize the party.
Michael is thrown in the middle of a deposition between Dunder Mifflin and his girlfriend Jan after Jan sues the company for wrongful termination. Although the case initially goes well for Jan, Michael's actions lead to Dunder Mifflin easily getting the upper hand. Meanwhile, back at Dunder Mifflin Scranton, a ping pong craze turns into a battle of the relationships between Pam and Jim and Kelly and Darryl.
Out of excuses, Jim and Pam join Jan and Michael for a dinner party. Things get complicated when Andy and Angela are asked to join, and Dwight's jealousy gets the best of him.
Michael gets fascinated by a chair model in a catalog, leading to a desire to move on from Jan. Kevin and Andy team up to gain parking spaces back for Dunder Mifflin lost during another complex tenant's construction work.
Ryan gets the surprise of his life when Michael and Dwight travel to NYC to go clubbing with him and his friends. Back in Scranton, the staffers are upset that they have to spend Saturday working on Dunder Mifflin Infinity, and Jim's attempt to rescue them doesn't go as planned.
After Stanley snaps at Michael during a meeting, Toby tries to convince him that Stanley needs to be dealt with. Dwight buys Andy's car. Pam's forced to wear old glasses instead of her contacts.
Michael is busy manning a job fair at Pam's alma mater, trying to find a summer intern. In an attempt to woo a major client, Jim, Andy, and Kevin go golfing.
Toby leaves Dunder Mifflin, and Michael plans a huge goodbye party... out of joy. Angela refuses to help with it, so Michael turns to Phyllis. Dwight and Meredith harass Holly, their new HR representative.