Asumi, a college student living a fulfilling daily life, had one major problem: a "trash room" old man lived in her apartment building. One day, reaching her limit, Asumi rang the doorbell of her nuisance neighbor to complain. She had no idea that this would be the start of a tragedy leading to a happy ending. Captured in the old man's house, she is treated like a toy. Whether with sex toys or his cock, she is forced to climax over and over again. After being made to orgasm repeatedly, she begins to beg for it herself. The college student is turned into a sex doll whose only purpose is to climax for a man with no more value than the trash scattered around the room. She falls into a state of being trash herself, repeating dirty orgasms.