Arata Matsuura

In an alternate Japan, territorial street gangs form opposing factions collectively known as the Tokyo Tribes. Merra, leader of the Wu-Ronz tribe of Bukuro, joins forces with heavy-hitting gangster Buppa of Buppa Town. With Buppa's support, Merra aims to initiate a gang war between the Wu-Ronz and the Musashino Saru, and in a confrontation between the two attempts to kill Kai of the Musashino Saru. The inadvertent murder of Kai's friend Tera (a Musashino Saru member beloved by all Tribes since before their formation) leads to the joining of forces between all of the Tribes in an all-out war against Merra and Buppa.

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.