Sebastien Grenier, a former French spy, is working as a financial analyst in Zurich. However, his peaceful existence starts to disintegrate when he is recruited by a top French intelligence operative to discover how one of their own secret agents was found out and executed in broad daylight.

A man returns to the place he once lived a passionate love affair with a woman who is now dead. So powerful are the emotions that seize him that he imagines she is still alive, and begins to live as if this were the case...