Barney freaks out when Marshall bequeaths a "slap bet" slap to Ted and Robin. Meanwhile, Lily's estranged father shows up for Thanksgiving.

While on a trip to Minnesota, Ted and Barney try anything to make Marshall laugh. Marshall runs into an old nemesis from high school.

The gang begins to realize their romantic partner reminds them of one of their parents. Meanwhile, Barney and Nora's planned romantic evening is ruined by a string of bad events.

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.

Lily and Marshall officially move to the suburbs and realize that Lily's bossy father refuses to move out of their house. Meanwhile, the gang adjusts to them moving by going to a strip club.

五分钟可以使一场成功的派对变成灾难！在Lily和Marshall的搬家派对上，Barney勾搭到一个不错的靓女，Ted和Robin争论对方性格的缺点，Marshall的领导想让其排队完后加班，而Lily的父亲想做一个养蜂人，看似正常的派对矛盾一触即发。

When Lily goes into labor, Ted and Robin distract her by telling her stories while Marshall hurries back from Atlantic City.

莉莉和马修没办法找到合适的保姆，他们发现罪魁祸首竟然是巴尼……巴尼对待女人的方式方法已经对他们造成潜移默化的影响，而这说不定是巴尼精心策划的一个阴谋！与此同时，罗宾和泰德都认为自己对现在的感情很认真，甚至为谁更认真的问题发生争吵。

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.

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.

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