I almost dismissed this as another worthless crude and unimaginative DVD release type teenage movie.  I'm glad i went to see it! 

When 4 guys, each as different as the seasons get together to go to Vegas to have a bachelor party 2 days before a wedding for one of them, and after taking a celebratory first drink on top of a roof at Ceaser's Palace in the very next scene 3 awake to a suite that is a total wreck, the groom is missing, and no one has any recollection of what happened the night before.

With a  wedding taking place in a day the race is now on to try and piece the night together , find the groom, and make the wedding on time.  With each discovery there is a clue, another adventure and non stop laughs. Along the way we discover more about the main characters , their lives and motivations, and in the end some revelations of each for change. 

Will we ever find out what really happened ?  Hint, stay for the credits...........

Great comedy, great fun,  a little cheesy, a little crude but you will laugh.