The Hangover

The Hangover is a series of American comedy films created by Jon Lucas and Scott Moore, and directed by Todd Phillips. All three films follow the misadventures of a quartet of friends (also known as "the Wolfpack") who go on their road trip to attend a bachelor party. While all of the films find three of the four men on a mission to find their missing friend, the first two films focus on the events after the nights of debauchery before a party, respectively in Las Vegas and Bangkok, whereas the third and final film involves a road trip and a kidnapping in lieu of a bachelor party…Wikipedia