When an amorously inclined young man runs across an attractive young woman in need of his help, it's not difficult for him to rush to her aid while imagining himself in her arms. Though he's married, he retains a strong desire to bed any pretty woman in sight. To his shock, he discovers later that the pretty woman he fantasized about is a ghost.

“无明领域”——人们这样称呼那个黑暗会吞没一切，夺走一切的地方。还有那些如同人类的绝望与混沌的象征般的异形。他们被称为——“戒缚”(imashime)为了调查侵蚀人类精神的“无明领域”，8个少年少女为了对抗“戒缚”被召集起来。在危机之中，现在与过去的命运复杂地交错着，他们可以在无明领域中找到光明吗？