Tormented and bullied people can access a special website, run by a Hell Girl who will enable them to take revenge on their torturers. The price for such a service is only that the person must join their torturer in damnation.

High school student Yoshio Kamogawa suddenly gained the power to read other people’s minds. One day, he receives mail from Sae Asami in Tokyo asking for his help. He goes to Tokyo and infiltrates Asami’s high school. He then becomes involved in gang fight as he tries to save her.

In the year 20xx, scientifically created zombies roam the world in record numbers. Despite this, Aya is determined to track down her father's killer, a person who was once close to her. With sword in hand and wearing nothing but her trademark bikini and cowboy hat, she sets off to settle the score.