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 Part II and the second-highest-grossing opening weekend of all time for an R-rated film, behind "The Matrix Reloaded" ($91.7 million). For the Memorial Day four-day weekend, the film amassed $103.4 million to become the fourth-highest-grossing Memorial Day weekend opening. In its second weekend the film gross dropped 64 percent from the previous weekend—while the original film dropped only 27 percent during its second weekend—and grossed $31.4 million. The film ended its box office run on September 15, 2011, on 113th day of its release. "The Hangover Part II" debuted in 40 countries internationally over the weekend of May 26–29, 2011, across 5,170