the hangover is all about a stag do for a mans wedding. they go to las vegas for the stag do but get incredibly drunk and cant remember anything. but they loose doug ( the groom). they search las vagus for him and for clues of finding him.

the opening is slow music with pictures of a wedding day. the credits are in the corner. the credits slowly fade in and out to go with the music. it then cuts to a close up of
a woman on the phone. it then cuts to a man replying to the call with a cut mouth in the desert.
this shows that something bad has happend and you are going to find out.