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Watch: <i>The Hangover Part II</i> Teaser

Apple has premiered the teaser for The Hangover Part II, the sequel to Todd Phillips' hit 2009 comedy about four friends -- Bradley Cooper, Ed Helms, Zach Galifianakis and Justin Bartha -- who travel to Las Vegas for a bachelor party, only to wake up the next morning unable to remember a thing or locate the groom.

This time, the action moves to Bangkok, where the friends trade in the baby -- or maybe the tiger -- for a denim-clad monkey, and Stu (Helms) acquires a Tyson-esque face tattoo. Here's the official synopsis:

In "The Hangover Part II," Phil (Bradley Cooper), Stu (Ed Helms), Alan (Zach Galifianakis) and Doug (Justin Bartha) travel to exotic Thailand for Stu's wedding. After the unforgettable bachelor party in Las Vegas, Stu is taking no chances and has opted for a safe, subdued pre-wedding brunch. However, things don't always go as planned. What happens in Vegas may stay in Vegas, but what happens in Bangkok can't even be imagined.

The Legendary Pictures/Warner Bros. film opens on May 26. Watch the trailer below, or visit iTunes Movie Trailers.

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