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.

Hodaka, a high school boy who moves from his isolated island home to the city of Tokyo, who immediately becomes broke! After finally finding work at a shady occult magazine, the sky rains every day until amidst the hustle and bustle of the big city, he meets a young woman called Hina. She lives a cheerful life with her younger brother, but also has a certain power: to stop the rain and clear the sky.