Barney’s plan to meet girls at the airport backfires as he and Ted are picked up by airport security, and Lily gets jealous when Robin monopolizes the male attention at their girls’ night out.
Debra agrees to let Ray be more involved in the daily decision making.
Molly recruits Joyce to spy on her suspicious next-door neighbor, while Mike and the guys get together for a poker game and end up sharing their hopes and dreams.
As Adele's condition deteriorates, Richard considers making a change; an explosion at a coffee shop results in a busy ER; Callie helps Meredith study; Lexie helps Alex and Arizona care for an intern's premature baby.
In order to save the wedding of someone close to him, Monk must first find out who is trying to sabotage it and why. Teri Polo, Carol Kane and Virginia Madsen guest star.