As Mayumi is chained up and her clothes being whipped off her, who is to save her but a masked, nude and well-endowed superhero named Kekko Kamen. Multi-talented with great fighting skills and special moves such as "Muff-ication", Kekko Kamen fights for justice, freedom and the naked truth.

Kekko Kamen squares off against the gym teacher.

Kekko Kamen squares off with an exchanged student armed with tentacles.

Kekko Kamen squares off with a perverted picture-taking samurai who just can't stop taking naughty photos of the girls on campus.