Léon: The Professional

Léon: The Professional: The movie concerns Mathilda, a 12-year-old girl living in New York City who has been exposed to the sordid side of life from an early age. One day, when Mathilda comes home to find her family has been killed by a drug dealer, she runs to a hitman to ask for help. She then becomes his protégée and learns the assassin's trade to take revenge.