"A love story in reverse."
The gang must figure out how to make the Stinson Hangover Fixer Elixir to help Barney recover on the day of the wedding.
Josh Radnor
Ted Mosby
Neil Patrick Harris
Barney Stinson
Jason Segel
Marshall Eriksen
Alyson Hannigan
Lily Aldrin
Cobie Smulders
Robin Scherbatsky
Cristin Milioti
Tracy McConnell
Trailer
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