When Ted pulls an all-nighter working on a pitch in an attempt to bring business to his fledgling architecture firm, Marshall tries to lure him to the roof for a surprise 31st birthday party. Barney professes his love for Robin and the story of the Goat...
Ted continues trying to land a client for Mosbius Designs, and when Tony tries to help nothing goes as planned—for either of them. Barney tries to smooth talk his way out of a ticket.
Ted explains to his future kids how a series of unrelated events led to a chance encounter with a former girlfriend. Barney makes the 200th notch in his bedpost. Marshall goes overboard when he discovers GNB has a department that can make him charts and...
When Ted violates the ‘three days rule’ by continually texting with a girl he’s just met, Barney and Marshall retaliate by impersonating her.
Ted goes out on his own as an architect and hires an intern to help get things started, but all he helps himself to is Robin. Meanwhile, news of impending layoffs at GNB has Marshall looking for a schtick to make him indispensible.
Barney attempts to complete in a single day all the tasks from a list Ted made to prove the gang’s not too old to do them.
Marshall and Barney lie to keep Ted from finding out the headquarters he’d been hired to design for GNB has been cancelled.
Ted is shocked to learn that Lily is responsible for many of his breakups with ex-girlfriends—including Karen.
Ted’s college girlfriend reenters his life and leaves Marshall and Lily remembering how much they hated her–a fact they never revealed to Ted.
When the gang suspects that Barney has a girlfriend after he mysteriously leaves MacLaren’s, they decide to follow him, only to find to their shock that Barney has a wife and child they never knew about.
Robin relies on a video résumé prepared by Barney to land a job before facing deportation back to Canada.
When a blizzard shuts down the city, Marshall and Lily try to continue their longstanding airport reunion tradition while Ted and Barney volunteer to keep MacLaren’s open so they can meet up with some college girls.
