The dope 'n' booze-battered survivors of the Las Vegas outing – Bradley Cooper, Zach Galifianakis and Justin Bartha – head to Thailand for the beach wedding of Stu (Ed Helms). Inevitably, despite his insistence on a dry bachelor party, they end up trawling the brothels, strip joints, tattoo parlours and sleazy hotels of Bangkok. Naturally, they don’t remember a thing. And the 16-year-old brother of Stu’s fiancée is missing. Fans of the original will know exactly what to expect.