The Hangover

Doug (Justin Bartha) is about to get married to his girlfriend. Two days before the wedding, Doug drives from Los Angeles to the Casino with friends Phil (Bradley Cooper), Sidney (Ed Helms) and Alan (Zach Galifianakis) to Las Vegas to throw Doug a pre-wedding bachelor party and check into the Caesar's Palace luxury suite. After one night, the three discovered that Doug was missing, a tiger appeared in the bathroom, there was an extra baby in the closet, Syd had a missing tooth, a Simmons mattress was stuck on the spire outside the window, Phil was wearing a hospital bracelet, Syd had an $800 receipt in his pocket, and their car had somehow turned into a police car. The three of them were panicked and couldn't remember what happened last night, but they must quickly solve the mystery within 24 hours to find Doug and return to Los Angeles...