: Ted spends the episode interacting with "future" versions of himself and Barney who argue over the potential outcomes of the night. Meanwhile, Marshall and Robin debate over who invented a cocktail called "The Minnesota Tidal Wave".
Ted imagines himself knocking on Tracy’s door and delivering a moving speech about how they will meet in exactly 45 days . He expresses a desperate wish for those "extra 45 days" with her, even if it meant being punched by her current boyfriend. [S8E20] The Time Travelers
The episode concludes with an a cappella performance of Billy Joel's "The Longest Time" by Ted, Barney, and their multiple imaginary future selves. : Ted spends the episode interacting with "future"
While he appears to be debating his future selves (Ted from 20 hours and 20 years in the future) and Barney Stinson's future selves about whether to attend "Robots vs. Wrestlers," the episode takes a sharp emotional turn when it's revealed that the entire interaction was a figment of Ted's imagination . The Core Story He expresses a desperate wish for those "extra