This extreme fetish production from a notorious documentary filmmaker opens the doors to the Secret Women's Detention Facility. Kai Miharu is abducted by an unknown group and awakens to footage of herself being violated while a strange machine gradually erases her memory. After a naked physical examination, she asks where she is. The female warden explains the facility and tells her she will never leave. Only three inmates will ultimately be needed by the end of the year, but more than twenty are currently confined there. What will happen to the other seventeen? Miharu can only obey the guards to earn points or find a chance to escape if she wants to survive. Her punishment soon begins. A guard demands sex in exchange for prison clothes and toiletries, then forcibly buries his face between her legs. He orders her to service him next, ramming his huge cock down her throat until stomach fluid spills from her mouth. He then penetrates her from behind with one brutal thrust, leaving Miharu's knees shaking. Distributed by Dream Room, M-Deshi.