One after another, strong female investigators are corrupted by a brutal human trafficking organization. - The administrator, Rena Matsumiya, was shaking with anger. - At that moment, a phone call from an unexpected person rings, providing a clue. - When they arrived to receive information, they found a gloomy ruin. - What awaits her there is the world's most horrifying iron-shackled pleasure t** that will lead Rena to climax hell. - I heard the demon's roar that shattered Rena's iron-clad heart...