The Hangover (film series) 2010, in Ontario, California, before moving on location in Thailand. Two years after "The Hangover Part II", Phil, Stu, and Doug are happily living uneventful lives at home. The only member of the Wolfpack who is not content is Alan. Still lacking a sense of purpose, Alan has ditched his meds and given in to his natural impulses until the untimely death of his father forces him to finally re-evaluate his lifestyle and seek the help he needs. Phil, Stu, and Doug are there to make sure Alan takes the first step. This time, Alan gets married to Cassandra, and
The Hangover director, appears as Mr. Creepy, who appears briefly in an elevator. Mike Tyson appears as himself; Tyson originally refused to appear in the film, but he changed his mind when he found out that Todd Phillips directed "Old School", which Tyson liked. Tyson later said that working on the film convinced him to change his lifestyle. Professional skateboarder Mike Vallely portrays Neeco, the high-speed tuxedo delivery man. Las Vegas personalities Wayne Newton and Carrot Top appear as themselves in the photo slide show. The plot of "The Hangover" was inspired by a real event that happened to Tripp Vinson, a