Garbage Island
Marshall becomes obsessed with saving the environment after seeing a documentary on garbage. Ted runs into The Captain. Barney admits he has feelings for a woman.
No Pressure
When Robin breaks up with Kevin, Ted confesses his feelings to her. Meanwhile, Barney is on a mission to find something private of Marshall and Lily’s.
The Ashtray
When Ted receives an unexpected call from The Captain, the gang reminisced about their last awkward encounter with him.
Campaign Shake-Up
Leslie and Ben are caught off guard when her opponent Bobby Newport hires a powerful campaign manager from Washington. Chris forces Ron to start interviewing replacements for Leslie when work starts falling through the cracks, and an unlikely officemate solves a challenging problem.
Woman of the Year
Leslie is outraged when Ron wins a “Woman of the Year” award for a project she started. Meanwhile, Tom is desperate to find some money to invest in a local Pawnee club.
Best Men
Mitch and Cam's friend Sal announces she's getting married the next day and they are in the wedding; Gloria doesn't trust her new nanny; Claire bonds with Haley; Phil helps Luke with a girl.
Leap Day
Mitchell feels pressured to make Cameron's birthday extra special. People start to question Jay's manliness, and the girls interfere with Phil's leap day plans.
Two Monkeys and a Panda
Claire runs herself ragged trying to fix the relationship between Haley and Alex, while Phil sneaks off to the spa. Meanwhile, Gloria is horrified by Jay's morbid plans to purchase two side-by-side crypts in preparation of their death, and Cameron decides he wants to write a book that celebrates the fact that Lily is adopted, but soon learns something new.
Truth Be Told
After reconnecting on Facebook, Phil invites his old high school girlfriend to drop by the house, but this friendly visit quickly turns into trouble. Meanwhile Jay accidentally kills Manny's beloved pet turtle, then goes to extremes to cover his tracks, and an overworked Mitchell finally stands up to his boss.
The Toast Derivation
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.