After celebrating New Year's Eve, Marshall visits his father's graveside to carry on their tradition of tailgating. Meanwhile, Barney and Ted open a bar called "Puzzles," and Robin is forced to fill in for an inebriated news anchor.
Kevin proposes to Robin, but will he take it back when Robin tells him she can't have children? Meanwhile, Barney and Ted try to score on the "drunk train" to Long Island, but something is surprisingly holding Barney back.
While Ted waits to find out whether Robin loves him back, he discovers that Marshall and Lily have been trying to influence him in opposite directions to win a bet. Meanwhile, Barney tries to find Marshall and Lily's sex tape.
Barney gets played and heart-broken over a stripper named "Karma," Robin becomes bored with her life on Long Island with Marshall and Lily, while Ted searches for a hobby to fill the empty space in Robin's old room.
As Ted, Marshall, and Barney get together for their triennial viewing of the original Star Wars trilogy, Ted begins to question if he will ever end up where he wants to be - especially now that Barney and Quinn are getting serious.
Just as Ted starts to settle into his new apartment alone, Barney tries to entice him into going out every single night. Meanwhile, Lily has a naughty dream about someone other than Marshall, and Robin finally becomes a famous news anchor.
Barney tries to set Ted up on dates so that he can forget about Robin, while also plotting to get Quinn out of her stripping job. Meanwhile, Lily sends Marshall on a getaway so that he will stop stressing over the baby.
Ted makes a fateful phone call to his old girlfriend Victoria, Barney's magic trick gets him in trouble with airport security just as he's about to leave on a trip with Quinn, and Robin tries to take the perfect birth announcement photo.
Ted convinces Victoria to take a brief detour before they leave together after she leaves her fiancé at the altar, and Barney's engagement to Quinn may be short-lived after she finds about his past relationship with Robin.
When Lily and Marshall have trouble finding a nanny, they learn it's because of an elaborate scheme Barney came up with to meet girls. Meanwhile, Robin and Ted butt heads over who has a more serious relationship.
As the season of break-ups continues, Ted and Victoria must choose the next step in their long and complicated relationship. Meanwhile, Robin worries about Barney when he chooses a dog to be his wingman.
Robin has a plan to get Barney out of her system for good, Ted witnesses Marvin's first crawl while babysitting for Marshall and Lily, and Barney has a new business idea after destroying a beloved tie.
Robin tries to get Barney's "Playbook" out of jealousy over his new girlfriend, Marshall catches his mom having sex with Lily's dad, and Ted tries to get everything back that was borrowed from him and never returned.
Ted wants to rub his new building in the face of an old professor, Barney is the victim of a lengthy jinx, Marshall and Lily run into an annoying old acquaintance, and Robin gets an opportunity to fire Patrice.
Will Ted go to the opening of his new building with Robin as his date, or will he break his promise to Barney and tell her that Barney is proposing to Patrice? Meanwhile, Marshall and Lily have big plans for a rare night out.