Undine works as a historian lecturing on Berlin's urban development. But when the man she loves leaves her, the ancient myth catches up with her. Undine has to kill the man who betrays her and return to the water.

When a man flees France after the Nazi invasion, he assumes the identity of a dead author whose papers he possesses. Stuck in Marseilles, he meets a young woman desperate to find her missing husband - the very man he's...