Two years after that weekend in Vegas, Stu is starting anew and is getting married. With Phil, Doug, their wives, and even Alan, they fly to Thailand for the wedding. Avoiding any celebrations, Phil coaxes Stu into one beer by a bonfire...which becomes their last memory until they wake up in a seedy apartment in Bangkok to find a bald Alan, Stu with a tattoo, and the bride's brother, Teddy missing. Now (along with a drug dealing monkey in tow), the wolf-pack must retrace their steps to find him...only to end up with more craziness they can't begin to imagine. Starring Bradley Cooper, Ed Helms, & Zach Galifianakis. Directed by Todd Phillips.