Taking place after the defeat of the Demon in Ninja Gaiden II: The Dark Sword of Chaos. The Animation stars Ryu Hayabusa who is living in New York alongside Irene Lew, running a curio shop. Loosely inspired by the video game of the same name (忍者龍劍傳), ninja Ryu must take on an evil corporation dabbling in illegal genetic experiments to create demonic mutants. Modern Super Ninja inherits the lineage of the dragon clan, the Hayabusa ninja Ryu Hayabusa (リュウ·ハヤブサ, Ryu Hayabusa) because his father was killed, and holding a dragon sword made of dragon teeth, set foot on revenge Road, and finally eliminated the evil ghost king and evil god. One year after the fateful battle with the evil ghost king, the Dragon Ninja Ryu Hayabusa is facing a new adventure...