Drug investigator yuri, frustrated by the disappearance of her colleagues, learns from an informant that the black lion society is involved in the case and infiltrates alone. However, she falls into a trap and loses consciousness in front of a strange object. Her beautiful body, bound and unable to move, is tormented with unreasonable pleasure. She desperately resists, but the pleasure calls for more pleasure, and she falls into an endless hell of pleasure, climaxing in panic. What will be her fate?