To try and keep Robin from going on a camping trip with co-worker Sandy Rivers, Ted tries to make it rain with a rain dance. Lily gets accepted to her internship and California and her and Marshall break up.
The matchmaker from a previous episode finally has a match for Ted, but he thinks Robin is still the one. Lily has a secret interview for an art school fellowship in California. Barney has a war with an office worker from across the street.
Barney, Marshall and Lily convince Ted to do some shots. When he wakes up the next morning with no memory of what happened the previous night, he wakes up next to an unknown woman and a pineapple on his nightstand.
Victoria: I will tell you my most humiliating story. Marshall: Yeah, Victoria! Way to step up. Victoria: OK, it involves a game of Truth or Dare, a squeeze bottle of marshmallow ice cream topping, and the hot tub at my grandparent's retirement community. Future Ted: ... Kids, I tell you a lot of inappropriate stories, but there's no way I'm telling you this one. Don't worry, it wasn't that great... Marshall: That is the greatest story ever!
Barney [playing laser tag, on phone with Ted]: Hey, loser. How's not playing laser tag? Because playing laser tag is awesome! [kid fires at Barney as he runs by] Oh, I killed you, Conner! Don't make me get your mom! Ted: Hey, listen, I need your help on something. Barney: Okay, meet me at the bar in 15 minutes. And suit up!