Anne Forestier, the partner of Inspector Verhoeven, is the sole witness to a robbery at a jewelry store on the Champs-Élysées, having miraculously escaped the robber's brutality. Shaken by the attack, Inspector Verhoeven throws himself wholeheartedly into the investigation, which becomes a personal matter as the robber, a notorious criminal of rare violence, seeks Anne to eliminate her…

The two men become embroiled in a frantic chase where the stakes are Anne. Verhoeven, feeling his personal life threatened, becomes violent and relentless himself, to the point of renouncing all his principles… The roles between them begin to intertwine masterfully; who is ultimately the hunter and who is the prey?