Michael comes up with an idea that causes a huge problem in the office; Pam, Jim and Andy each give Kevin different advice on wooing a woman.
Michael meets a mysterious woman at a blood drive; Dwight and Kevin attend a "Lonely Hearts Party"; Jim and Pam have an awkward lunch with Bob and Phyllis.
Michael brings dancing and coffee to the office; Jim and Pam plan a secret trip.
Luck is in the house during a Vegas night fundraiser; Seth becomes Summer's lucky charm and Marissa reconnects with Luke. In the aftermath of events involving Ryan's mom, Kirsten takes a chance and opens her home to the boy.
Michael makes big plans for his 15th anniversary party at Dunder Mifflin; Jim plays a prank on Dwight that has unexpected results.