Plot: Just two days before his marriage with Tracy Garner, Doug Billings, in the company of two friends: Phil Wenneck and Stu Price; and Tracy's eccentric brother, Alan, head out to party in Vegas. Driving his father's Mercedez, they rent a pricey villa at Caesar's and head for the rooftop to have a good time. Three of them later wake up with a hangover, unable to re-collect what exactly happened. With the villa in a wreck, turned upside down, they find that they have a baby in the closet, a grown tiger in the bathroom, Stu has a missing tooth and a hooker for a bride, and Doug is missing. Hilarious chaos results as the trio head out to re-trace their steps, find out that occurred in order to try and locate Doug, and bring him home in one piece before the wedding.