Ria Yuzuki awakens chained inside a pitch-black, sinister room with no idea what is happening, only to find a stranger violating her body. Her resistance proves futile, and an endless life of captivity and sexual training begins. Confinement, restrained assault role-play, taped bondage, forced deepthroat, and creampie sex follow without relief. As the sexual abuse continues with no end in sight, her thoughts gradually melt away under the relentless stimulation.