A large army takes on a small village in 370 B.C. China, and their life hangs in the balance of one mysterious warrior, who has come to save them and take on a nation bent on conquest. A small kingdom that lies in the path of a large encroaching army turns to a mysterious stranger for help. The stranger uses Sun Tzu-style strategy to combat the advancing troops.

An orphan raised from youth to be an assassin. When he rejects his killer life, he is ruthlessly hunted by his former clan members. Teaming up with a mysterious wanderer with his own score to settle, together they battle the murderous clan, culminating in a legendary fight scene against the Iron Claws of gang leader Yoh.