A young Korean Taekwondo competitor arrives in Japan near the end of World War II with hopes of being a fighter pilot, but ends up on the streets battling racism, organized crime, occupying American servicemen, and his own fear of failure as a martial artist. He retires to the wilderness for two years to train his body in the art of karate and returns to take on the world.

Inspired by the real life tale of Karate expert Matsutasu Oyama.