What if you had two lives at once. What if you knew that one life took place only in your dreams. What if you didn't know which life was real.

When Marie, a widow in Provence with two daughters, locks her bedroom door and goes to sleep, she dreams about Marty, a literary agent in Manhattan who dreams equally vividly about Marie. The women look alike. Marie meets William who begins to court her. Marty meets Aaron, an accountant, becomes his friend and then his lover. Both women tell their lovers about their dream life. William is jealous, Aaron is accepting. Even though they've become lovers, Marie won't fall asleep next to William. Marie goes on holiday with William to Paris, and Marty wakes up with an ashtray from the hotel on her night stand. Are they the same person? What will unlock reality?