Michael is outraged when Jim lets Phyllis be Santa at the office Christmas party; Jim and Dwight try to get everyone in the holiday spirit; Oscar has a secret crush.
Troubling rumors about Dunder Mifflin rock Michael's world; strange diversions upset Jim; Andy finds that his awkwardness is his biggest hurdle in courting Erin.
Michael makes big plans for his 15th anniversary party at Dunder Mifflin; Jim plays a prank on Dwight that has unexpected results.
Michael must tell the truth when he realizes he cannot keep a promise he made to a group of kids 10 years ago; Jim starts an employee-of-the-month program to boost employee morale.