In an alternate Japan, territorial street gangs form opposing factions collectively known as the Tokyo Tribes. The simmering tension between them is about to boil over into all-out war.
Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.
