A Paris flea market vendor is transformed into a vigilante after his fiancée is murdered by three vicious thugs on a commuter train. As the revenge-minded young man tracks the killers, a veteran police inspector leads a parallel investigation.

A woman who hasn't seen her father in 18 years, learns of his death and goes to his estate in France to carry out his wishes. She then learns that her father was a thief who after getting caught and going to prison and upon his release was approached by an insurance company, who wanted him to use his talents in helping them recover some valuables that had been stolen, which became his new job. Now that he is gone, he wants her to continue his work.