Tadashi Otake

After failing her university entrance exam, Sakuko is invited by her aunt Mikie to spend summer vacation in a beautiful seaside town. Sakuko gets to know the people of the town, including Takashi, a shy relative of her childhood friend.

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.