At Barney's future wedding, everyone remembers when they made Ted go after a girl who'd gotten away.
As Ted and Robin try to help Lily get through her contractions, Marshall struggles to get back to New York City before she gives birth.
The baby shower makes Marshall realize just how close fatherhood is for him. Meanwhile, Ted dates a slew of girls, all of whom bring up memories of Robin.
Barney tries to get Ted out to make every night legendary. Meanwhile, Marshall obsesses over determining about whom Lily had a sex dream, and Robin gets a crash course in overnight fame.
Ted, Marshall, and Barney get together to watch the Star Wars trilogy and imagine where they may be three years from now. Meanwhile, Barney and Quinn move in together.
The rest of the gang tries to intervene when Barney announces Quinn's moving in with him. Meanwhile, Ted and Robin clash over subletting Quinn's rent-controlled apartment.
Barney continues his pursuit of Quinn. Ted has to deal with Robin's old room, while Robin gets a taste of suburban life from Marshall and Lily.
Ted tells Robin he still has feelings for her. Barney hunts for Marshall and Lily's sex tape.
A weekend Vermont vacation with Marshall and Lily sees Robin and Kevin discuss getting serious. Meanwhile, Barney meets a girl who seems to know his moves before he makes them.
Ted's spat with Garrison Cootes, Barney's encounter with a crazed divorcée, and Mickey's basement apiary all throw kinks into Marshall and Lily's housewarming party.
Lily and Marshall's plan to officially move to the suburbs hits a snag when Lily's father refuses to leave. Meanwhile, the rest of the gang hits a strip club.
Marshall tailgates at his father's grave to keep a tradition alive. Ted and Barney start their own bar. Robin's pressed into service when Sandy is too drunk to be on the air.
Robin receives bad news and tries to hide it from the gang. Marshall hopes to make his home's Christmas decorations the best in the neighborhood.
Ted and Barney considers the pros and cons of raising a baby together. Meanwhile, Robin hopes to dissuade Marshall and Lily from moving to Long Island.
Barney and Robin decide whether to keep their one night stand a secret from Nora and Kevin. Meanwhile, the rest of the gang goes to a "-palooza" concert.
The gang recounts their actions when Hurricane Irene bore down on New York City. Meanwhile, Barney seeks a way to stop wearing the ducky tie.
Robin recounts to a therapist the events that led her to his office. Meanwhile, Ted tries to help Lily and Marshall withtheir pregnancy too much.
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