There is a rumor of a website called “Hell Correspondence” which only opens at twelve midnight sharp. When a user submits a name of the person to be gotten rid of, a hell girl Ai Enma brings the person to the hell. In the contract with Ai, she will bring the contractor to the hell when he/she ends its life in return. A missing person case in a newspaper is talked among the high school students that a girl in the school requests “Hell Correspondence” to send her enemy to the hell. A journalist starts to uncover the case and finds out the cursed world behind the “Hell Correspondence”.