Don Champagne (Patrick Wilson) seems to have it all: a successful business, a perfect house, perfect kids and a perfect wife. Unfortunately, when his wife, Mona (Katherine Heigl), learns of Don's affair with a pretty new salesgirl (Jordana Brewster), this suburban slice of heaven spirals out of control. Don soon realizes that Mona will stop at nothing, including murder, to maintain their storybook life where "perception is everything".