FBI undercover agent Marc Devaux and kindergarten teacher Rusti Collins are thrown together when Devaux mistakes her for her identical twin.He passes her a jeweled box containing incriminating microfilm. Rusti wants no part of this blue-eyed devil. But after she discovers her sister stabbed in the heart and her own life plunges into jeopardy, she takes a chance. To get to the truth, the couple struggle against fiery passions and wildly diverse backgrounds to keep each other out of the clutches of the crime boss, the cops, and the killer who wants them dead.