'The Hangover Part 2' Teaser Trailer Brings Back the Wolfpack!

Uh oh. Where's Doug? Bradley Cooper, Ed Helms and Zach Galifianakis are back in the first teaser trailer for The Hangover Part II!

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First Showing has the first trailer for the highly-anticipated sequel and it's just over a minute long.

The "wolfpack" is reunited in the trailer, but Justin Bartha (Doug) is no where to be found.

And instead of having a baby tag along with them, it looks like they have a monkey this time!

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Watch the trailer below and tell us what you think!

The Hangover Part II hits theaters March 26!