The Hangover Part II takes no chances and opts for a safe, subdued pre-wedding brunch. Things do not go as planned, resulting in another bad hangover with no memories of the previous night. Development began in April 2009, two months before "The Hangover" was released. The principal actors were cast in March 2010 to reprise their roles from the first film. Production began in October 2010, in Ontario, California, before moving on location in Thailand. The film was released on May 26, 2011 and became the highest-grossing R-rated comedy during its theatrical run. A third and final installment, "The Hangover Part III", was released
The Hangover (film series) of a bachelor party. Each film in the series focuses on how the friends try to deal with the aftermath of their antics while they are being humiliated and occasionally physically beaten up at each turn. "The Hangover" tells the story of Phil Wenneck, Stu Price, and Alan Garner, who travel to Las Vegas for a bachelor party to celebrate the impending marriage of their friend, Doug Billings. However, Phil, Stu, and Alan have no memory of the previous night's events and must find Doug before the wedding can take place. Screenwriters Jon Lucas and Scott Moore wrote the script