Léon, the top hit man in New York, has earned a rep as an effective "cleaner". But when his next-door neighbors are wiped out by a loose-cannon DEA agent, he becomes the unwilling custodian of 12-year-old Mathilda. Before long, Mathilda's thoughts turn to revenge, and she considers following in Léon's footsteps.

Ex-con attempting to go straight runs across serious problems. His girlfriend gets arrested for dealing crack to an undercover police officer. In a desperate attempt to get the charges dropped against his woman, he strikes a deal with a weapons cop to turn in local gun dealers. However, the D.A. is not satisfied with the results, resulting in some serious game playing and double crossing.