With yet another relationship break-up painfully fresh in memory, newly single Jen (Heigl) reluctantly agrees to a holiday to Nice with her security conscious, alpha male father (Selleck) and merry booze-hound of a mother (O'Hara).
She's soon swept off her feet by the permanently shirtless, walking Abercrombie model Spencer (Kutcher), who's charmed by her goofy tics and refreshing normality.
Fast forward three years, and the pair are living the idyllic surburban life. The only problem is, Spencer forgot to tell Jen that when they met he just so happened to be a super-spy killing machine.
So while he gave it all up to live happily ever after, the past is coming back to bite them in the form of five murderous sleeper agents...