A beautiful girl , Anka Suzune, is taken into an impersonal, dark underground space. What awaits her are countless iron restraints and a frightening torturer. Without being able to comprehend the situation at all, the torturer slaps her one after another and chokes her, completely destroying her will to resist... Before she knows it, her whole body is restrained and she is being forced into absolute submission. Then, various foreign objects and meat sticks are thrust into her completely exposed anus one after another. The anal torture begins, from which escape is impossible and she will inevitably go mad.