Two years after their escapade in Las Vegas, Stu (Ed Helms), Phil (Bradley Cooper), Doug (Justin Bartha), and Alan (Zach Galifianakis) are traveling to Thailand to celebrate Stu’s wedding to his fiancée, Lauren (Jamie Chung). Much to Alan’s dismay, they are joined by Lauren’s younger brother, Teddy (Mason Lee), a prodigy and pre-medical student at Stanford University. At the wedding reception, Lauren’s father shows his disapproval of Stu by comparing him to rice porridge in his toast. At the end of the night, Stu hesitantly joins Phil, Doug, Alan and Teddy for a beer. Sitting at a campfire and roasting marshmallows, the group toast to Stu and Lauren’s future happiness.
The following morning, Phil, Stu and Alan, along with gangster Leslie Chow (Ken Jeong) (whom Alan befriended after Las Vegas) and a chain-smoking capuchin monkey, awaken in a dirty hotel room in Bangkok.
And so it begins again. Sequels are rarely as good as the original, and this is probably no exception, but it was a great attempt at besting the original, and however you view it was well worth the money.