Ninja Assassin follows Raizo, one of the deadliest assassins in the world. Taken from the streets as a child, he was transformed into a trained killer by the Ozunu Clan, a secret society whose very existence is considered a myth. But haunted by the merciless execution of his friend by the Clan, Raizo breaks free from them and vanishes. Now he waits, preparing to exact his revenge.
An over the top Ninja action film with visceral bloody scenes. Humdrum story but goofily entertaining. Raizo has been trained by the Ozunu clan to be a Ninja assassin since childhood but has turned his back on them. Raizo teams up with a Europol investigator Mika to go after his former master to get revenge for the killing of his friend.