The Wolf Pack is back in action, and returning to Las Vegas in the second full-length trailer for Warner Bros. and director Todd Phillips's trilogy ending sequel The Hangover Part III. The death of Alan's (Zach Galifianakis) father has sent him spiraling, and only Stu (Ed Helms) and Phil (Bradley Cooper) can help their friend to recovery.

The Hangover Part III Poster
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The Hangover Part III is the third and final film in director Todd Phillips' record-shattering comedy franchise. This time, there's no wedding. No bachelor party. What could go wrong, right? But when the Wolfpack hits the road, all bets are off.