Leon: The Professional is a neo-noir action thriller film directed by Luc Besson. Natalie Portman stars as Mathilda, a young girl who seeks the help of a professional hitman, Leon, played by Jean Reno, after her family is murdered. The film explores the unlikely bond that forms between Mathilda and Leon as they navigate a dangerous world of crime and corruption. With its gripping storyline and memorable performances, Leon: The Professional is considered one of the best action films of its time.