Robin’s anxiety on her wedding day to Barney prompts Ted to recount the time he insisted on leaving Victoria’s jilted fiancé a note before they drove off into the sunset together.

When Barney designs an extensive pre-nup, the guys take note and propose their own relationship amendments to their significant others. Meanwhile, Quinn is outraged and draws up a pre-nup of her own, which causes friction between the sexes.

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.

When Lily and Marshall can’t decide on godparents for Marvin, they put the gang to the test to see who would make the best one.

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.

When Robin is hesitant to break up with Nick, Barney takes matters into his own hands. Meanwhile, Lily and Marshall are desperate for some private time.

Marshall recommends his old law school classmate Brad for a job at his firm, but the interview goes awry, leaving Marshall to do damage control with his boss. Meanwhile, Robin helps negotiate Barney’s return to the strip club circuit.

Marshall takes on his old friend/new nemesis Brad in the biggest case of his career. Meanwhile, the gang reminisces about their own run-ins with the law, leading to a debate over who was the biggest delinquent as a teenager.

Robin is determined to get Barney back no matter what it takes. Meanwhile, Ted fills in as Marvin’s Nanny, leading Marshall and Lily to realize that Ted is using baby Marvin to replace his other baby, the GNB building.

Barney's developing relationship with Patrice leaves Robin questioning his motives. Marshall's widowed mother gets back into the dating pool, but he thinks she may be swimming with a shark.

Robin takes steps to have Patrice fired from WWN, while Marshall puts a jinx on Barney. Later, Ted invites his architecture professor to the dedication of the GNB building, and Marshall and Lily bump into an oddball acquaintance from college.

Christmas approaches and Ted wrestles with whether to tell Robin about Barney's intentions involving Patrice, while Marshall and Lily get an early Yule gift, a night away from Marvin, but a case of separation anxiety strikes and threatens to ruin the evening.

When Robin learns that Barney never asked her father’s permission before proposing, she insists that he seek his approval before announcing their engagement. Meanwhile, Ted keeps his feelings concealed by throwing himself into planning their wedding.

Barney begs Ted to continue seeing his much younger, much wilder girlfriend, even though Ted has nothing in common with her. Meanwhile, Robin must adjust to the power of the bling.

Barney uncovers the lost episode of Robin’s “Underneath the Tunes” as Robin Sparkles. Meanwhile, Marshall and Lily are concerned that Ted’s new girlfriend is a stalker.

Ted is reluctant to break up with his crazy girlfriend Jeanette. Meanwhile, Robin becomes attached to Marvin after finally holding him for the first time.

When Ted receives an unexpected call from The Captain, the gang reminisced about their last awkward encounter with him.

Barney's legendary relationship playbook, which Robin thought was destroyed, rears its head when Ted and Jeanette break up and Barney decides to use his chick manual to help Ted find a new girlfriend.

Barney reluctantly attempts to sell his apartment by holding an open house, during which Ted and Marshall get mistaken for a couple. Tension arises between Lily and Marshall when her new job causes her to spend less time at home.

Ted and Barney's future versions attempt to persuade present day Ted to go see Robots Versus Wrestlers. Marshall and Robin have a dance-off.

When The Captain asks Lily to move to Rome for a year as his art consultant, she fears that Marshall will resent her. Meanwhile, Ted and Barney become obsessed with a girl who is hiding her amazing body under a puffy coat.

The gang works together to plan a legendary bachelor party for Barney.

Robin desperately tries to locate the item that she buried in Central Park years earlier to wear as her "Something Old" for the wedding. Meanwhile, Marshall and Lily ask Ted to help them pack for Italy, and Barney invites Robin's father to play Laser Tag in order to bond with him.

As the gang prepares to go to Robin and Barney’s wedding, Ted invites Lily to see the house he's finally finished fixing up. Meanwhile, Robin and Barney’s night of relaxation is ruined by an obnoxious couple, and Marshall takes the baby on a last-minute trip to Minnesota to see his family.

On their way to Long Island for their wedding weekend, Robin and Barney come across a startling family discovery. Meanwhile, Marshall sees something online that changes the course of his journey east, while Lily confronts Ted about letting go of Robin.

When James reveals that he is getting divorced, Robin worries about how Barney will take the news. Meanwhile, Marshall races to find a way to get to New York in time for the wedding, and Ted deals with being alone at a romantic hotel.

When Lily discovers Ted’s list of things he wants to do in New York before he moves for Chicago, she becomes frustrated that she is the only person who knows about his plans. Meanwhile, Robin and Barney realize they have very little time together before their relatives arrive for their wedding.

While Barney works through his anger at Ted after finding out he still has feelings for Robin, Marshall Skypes in to act as a judge and help settle their dispute. Meanwhile, Lily realizes she is Robin’s only girlfriend.

Barney is upset after Robin wins James's wedding ring during the poker game, and Ted argues with Marshall and Lily over whether he gave them a wedding gift.

When Ted finds himself with three prospects to be his date for the wedding weekend, he chooses poorly. Meanwhile, Barney and Robin have a confrontation with their minister, and Marshall learns more about his driving companion, Daphne.

When Daphne sends a troubling text message to Lily, Marshall enlists the gang's help to remove the message while enforcing the "No Questions Asked" rule.

When Robin and Loretta's conflict escalates, Barney is caught in the middle. Meanwhile, Marshall and Daphne deal with a stowaway on their road trip, and Ted and Cassie try to enjoy a trip to a lighthouse.

During a flashback, the gang wonders how the Ted, Robin and Barney love triangle will play out; Barney accepts challenges from Robin and Lily.

Barney concocts a plan when his father arrives at the hotel; Ted thinks he is being framed when a wedding-related duty gets messed up.

Marshall tries to get Marvin to sleep by reciting rhyming bedtime stories.

Robin is dismayed when Barney wants to have their rehearsal dinner at a laser tag arena; Ted aggravates Lily by not following through with a promise.

A man at the wedding intentionally stirs up trouble; Marshall finally arrives at the Farhampton Inn.

In an attempt to deliver a devastating final slap to Barney, Marshall explains how he mastered the Slap of A Million Exploding Suns.

Robin and Ted try to get Barney to reveal secrets after he drinks too much; Marshall tries to avoid fighting with Lily.

The mother reveals how she met Ted and what she has been doing over the past eight years.

Robin and Ted reminisce about past relationships as they search for a drunken Barney on the day of the wedding; Lily and Marshall come to a resolution; Barney befriends two men who are eager to meet women.

The gang must figure out how to make the Stinson Hangover Fixer Elixir to help Barney recover on the day of the wedding.

Robin and Lily have a fight on the morning of the wedding; Barney can't decide what suit to wear; the gang watches a movie that Ted didn't want them to see.

Marshall asks Barney and Ted for help figuring out where Lily went in the middle of the night during their argument.

When Gary Blauman shows up at the wedding, it sends the gang into a frenzy as they each recall an encounter with him.

With only a half an hour left before the wedding, Robin and Barney panic; Lily and Marshall rewrite their wedding vows.

Ted finally finishes telling his kids the story of how he met their mother.

Ted finally finishes telling his kids the story of how he met their mother.