"You look like somebody who's about to do something stupid." On a Paris bridge at night, a young woman with misty eyes leans over the icy waters of the Seine, strongly tempted to put an end to her misery. Suddenly from behind, out of nowhere, comes a stranger named Gabor. But he has an ulterior motive—he's a professional knife-thrower in search of a willing target. The woman, called Adèle, reckons she's never had any luck in life, and no longer wants to keep trying; but all things considered, if she's going to die, she may as well make herself useful...