A multi-layered series that looks back to the formative years of Ryu and Ken as they live a traditional warrior's life in secluded Japan. The boys are, unknowingly, the last practitioners of the ancient fighting style known as "Ansatsuken" (Assassin's Fist). The series follows them as they learn about the mysterious past of their master, Goken, and the tragic, dark legacy of the Ansatsuken style. Can their destiny be changed, or will history repeat itself?