Directed by Yoo Suk-ho, "Ninja Assassin 2009" tells the story of a young ninja named Raizo (played by Rain), who is trained in the art of ninjutsu from a young age. Raizo is part of a mysterious organization known as the "House of Ninja", where he is forced to carry out missions and eliminate targets with precision and skill. However, when Raizo discovers the true nature of his organization and the cruelty it inflicts on innocent people, he decides to defect and leave the group.

The film's use of slow-motion and quick cuts adds to the visual impact of the action sequences, making them both stylish and visceral. The score, composed by Moby, complements the on-screen action, elevating the tension and excitement of the film's most intense moments.

One of the standout features of "Ninja Assassin 2009" is its impressive martial arts sequences. Rain, a skilled martial artist himself, performs most of his stunts, bringing an authenticity to the film's action scenes. The movie features a range of intense fight choreography, from Raizo's solo battles against multiple opponents to the thrilling final showdown between Raizo and Hanjo.