Jay agrees to sub in on Cam's bowling team, not knowing it's an all-gay league; Phil and Clair have an unexpectedly nice time with their neighbors; Gloria and Mitch agree to go out with Haley.
When a man (Wentworth Miller) collapses after making a generous donation, House and Dr. Chi Park try to identify his medical disorder; Thirteen's pursuit of happiness is hampered by feelings of guilt.
On the day of Cloud 9's "In-store-vaganza," Dina finally gets the chance to step up to the plate and run the store; Garrett and Cheyenne search for a mysterious smell; Jonah finds himself excited about a new opportunity.
Howard Stark suddenly returns -- possibly creating more trouble for Peggy; Chief Dooley follows a new clue that threatens Peggy's future at the SSR.
Ray helps Hector handle someone; Bunchy learns a lesson about marital compromise; Terry has a renewed sense of purpose; Detective Muncie uses evidence against the Donovans.