How I Met Your Mother Season 9 Episode 18
The gang must figure out how to make the Stinson Hangover Fixer Elixir to help Barney recover on the day of the wedding.
Serie: How I Met Your Mother
Guest Star: David Henrie, Lyndsy Fonseca, Mariangela Pagan, Ray Wise, Robert Belushi, Sharline Liu, Spencer Ralston