Newly arrived at a school as a rookie teacher, Tsuruta Kana visits the home of a student who has been skipping classes. Upon arriving at the student's house, she encounters an unexpected situation. During the visit, she is drugged with sleeping medication and loses consciousness. When she wakes up, she finds herself completely restrained and unable to move. Not only is she raped by multiple men, but also by women, pushed into a deeply humiliating ordeal. The terror and shame she experiences become an unforgettable trauma.