Aoi Kurugi is a cheerful female college student happily in a relationship with her boyfriend. However, her life takes a dark turn when her boyfriend steals a dangerous client list and sells it to a rival company, leading their seniors to discover the betrayal. Enraged, the seniors launch a violent raid on his home, dragging Aoi into the chaos. In front of her helpless boyfriend, she is brutally raped in intense, wrestling-style positions before being kidnapped and imprisoned in an abandoned building. There, she is subjected to harsh training designed to turn her into a mere cumdump. Forced to endure daily ejaculations, Aoi gradually loses her sanity, transforming into a depraved woman who eagerly craves cock and semen even in submissive positions. As her body and mind are shattered, she evolves into an entirely new being.