The morning after his bachelor party, prospective groom Paul Morse wakes up next to a beautiful girl who's not his fiancée. Though his memory is unclear, Paul assumes he cheated on fiancée Karen, and now must scramble to keep her from finding out. He starts with a couple of small fibs, which morph into bigger lies. Soon, it all spirals out of control, and his life becomes a series of comical misunderstandings.