Robin's anxiety on her wedding day to Barney prompts Ted to recount the time in which he insisted on leaving Victoria's jilted fiance Klaus a note before they drove off into the sunset together. In the process of leaving the note, he runs into Klaus who is on his way out and has his own apology letter to Victoria. Back in the car, Ted makes a pit stop at the Farhampton train station to ask Klaus why he didn't want to marry her and he explains that he didn't have Lebenslangerschicksalsschatz, the German expression for love of absolute certainty. Barney reveals that he hasn't been forthright to Quinn about his history with Robin while Lily and Marshall struggle to stay awake as new parents. The episode ends with Ted leaving Barney and Robin's wedding to visit the same train platform as the woman with a yellow umbrella stands on the other side.
