Stu is getting married. Along with Doug, Phil, and his soon-to-be brother-in-law Teddy, he regretfully invites Alan to Thailand for the wedding. After a quiet night on the beach with a beer and ...

The Hangover is ... However, Phil, Stu and Alan have no memory of the previous night's events and must find Doug before the wedding can take place. It was followed by 2 sequels.