From “Old School” director Todd Phillips comes a comedy about a bachelor party gone very, very wrong. Two days before his wedding, Doug (JUSTIN BARTHA) drives to Las Vegas with his best buddies… From “Old School” director Todd Phillips comes a comedy about a bachelor party gone very, very wrong.

Two days before his wedding, Doug (JUSTIN BARTHA) drives to Las Vegas with his best buddies Phil and Stu (BRADLEY COOPER and ED HELMS) and his future brother-in-law Alan (ZACH GALIFIANAKIS), for a blow-out bachelor party they vow they’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.