Ted tries to prove he's not pathetic for getting left at the altar, and Barney tries to impress Robin, who thinks fighting is sexy, by fighting with patrons who are sitting in their favorite booth.
After Ted walks into the apartment to find Robin's date sitting on the couch in the buff, the gang realizes this method might be the easiest way to get their dates into bed with them.
Robin rediscovers the "Woo Girls," a group of single girls who like to go out and party. Meanwhile, Ted pitches Barney a design for his company's new headquarters.
When Lily and Marshall contemplate making the life-changing decision to have a baby, Lily turns to Ted and Robin for advice and their very different points of view on the issue.
While out for dinner with the gang, Ted runs into someone from his past that prompts each of them to think about how they would handle bumping into someone they'd rather forget.
After Stella and Ted make the spontaneous decision to get married in three days, the presence of their exes destroys what was to be the "happiest day of their lives."
When Ted discovers that the gang ditched their plans to stage an intervention for his engagement to Stella, he is adamant that they go through with it anyway.
After inviting the gang to Stella's apartment in New Jersey, Ted tries to sell them on the perks of living in the suburbs until he learns that she expects him to move there after they're married.
Television personality Regis Philbin meets a burger-mad Marshall while on his quest to find the restaurant where he had his very first New York burger.
As Stella responds to Ted's proposal, Barney realizes that he's in love with Robin.
HOW I MET YOUR MOTHER returns for a hilarious fourth season! It all started when Ted's best friend, Marshall, dropped the bombshell that he was going to propose to his long-time girlfriend, and now wife, Lily, a kindergarten teacher. At that moment, Ted realized that he had better get a move on if he too hopes to find true love. Helping him in his quest is Barney, a friend with endless, sometimes outrageous opinions, a penchant for suits and a foolproof way to meet women. When Ted met Robin, it was love at first sight, but when things didn't work out, Ted realized destiny must have something else in store. The series is narrated through flashbacks from the future.
When Ted is in an accident, he re-evaluates his life and relationship with Stella.
When Barney and Abby realize that they have one thing in common - their mutual hatred of Ted - the "couple" decides to go to the bar to flaunt their new relationship in Ted's face.
When Ted tells the gang Stella's intimate secret, he must face the consequences of breaking her trust.
When a guilt-ridden Barney breaks the "Bro Code", he struggles with the ramifications of his misstep.
When Robin rekindles things with an old flame, he crushes her again, but Barney, in his own inimitable style, helps her realize that she is awesome.
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