You enter a mysterious tower shrouded in a sea of mist as a chosen soul. You gained access to become the next torturer. You only have 6 days to get cleanse the sinful soul and get it through the trial. Otherwise, you will die yourself. However, as you proceed deeper inside the tower, it seems that there are many more secrets hidden from within, and the so-called trial is not as simple as you think. You will follow the story, and the characters within the story step by step to unlock the secrets of the tower. And make your own choice.