One night in Tokyo, Leo, a young boxer, meets his first love, Monica, an imprisoned sex worker. Caught up in a drug-smuggling scheme, they find themselves pursued by a corrupt cop, a yakuza, his nemesis, and a female assassin.
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.