On the night of May Day, popularly known as Walpurgis Night, when the power of the dark forces reaches its climax, a group of members of the Satanic Magic Club held an ancient secret rite of sacrifice in the college basement. Wanting to open the Gates of Hell, the young witches put their fellow student Kitami to the slaughter. And the gates of hell really open - by light candles played out horrible tragedy, which could not survive no one (at least, everyone thinks so). Twelve years later, a student at the same college, Minase, curious about a back room that has since been abandoned, discovers an ancient handwritten book of black magic spells in a wall niche. He begins to experience the effects of the spell and discovers that all he needs to do is inscribe the initials of the girl he lays his eyes on the paper object with his own blood and speak the words, and he is instantly aroused by her uncontrollable sexual desire for him. Minase is tempted to use his newfound power by falling in love with the college's most popular girl, the beautiful Shiroki, and also proudly demonstrates his skill to his friends.