In 48 hours, Doug is scheduled to walk down the aisle, effectively ending his reign as a rowdy bachelor. So as a fitting farewell, Doug's mates organise a Sin City bachelor bash he'll never forget. But when the three groomsmen wake up the next morning with pounding headaches, they can't remember a thing, their luxury hotel suite is beyond trashed and the groom is nowhere to be found. This raucously hilarious ride cleverly balances juvenile raunchiness and biting wit, and boasts a seasoned comedy cast featuring Bradley Cooper, Ed Helms, Zach Galifianakis, Heather Graham and Jeffrey Tambor. Mike Tyson also has a small, and suitably bizarre, role as himself.