For many years the Gods of Evil and Dragon Gods fought many battles - until the day that those with the blood of the Dragon Gods sealed away the power of the Gods of Evil. In the present, Ryu is a dragon ninja who, one night, is attacked by a group of assassins. He finds an I.D. card on one of the assassins which belongs to the Friedman Company, which is owned by Dr. Ned Friedman, a man claiming to have cured cancer. On top of that, upon walking by a house Ryu hears a young girl asking for help. What do these mysterious events mean, and does it have anything to do with the power of the Gods of Evil?