In 1868, after the Bakumatsu war ends, the ex-assassin Kenshin Himura traverses Japan with an inverted sword, to defend the needy without killing.

Following a tip, Manabu Yazaki loses his last money betting on the older "banba" horse "Unryu" (jockied by Makie, a legendary jockey's daughter) in a draft-horse race held in his childhood home of Obihiro on the island of Hokkaido.

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.