AllMovie

Antoine (Gerard Lanvin becomes a cool, controlled vigilante when his lover is murdered by three psychotic men preying on their victims in subways and trains. After acquiring a gun, Antoine starts his hunt for the killers and as both he and the police make progress in their search, they eventually end up at the killers' hideaway together. A police shoot-out kills two of the suspects, but a third is captured and put inside the police van to be booked and jailed. At that point, Antoine and the police differ on the value of the criminal justice system, and with his lover's gruesome death dominating his every thought, Antoine walks towards the van convinced that nothing short of vengeance can bring him personal peace.