Trapped in a locked room with no escape, Mami Nagase is subjected to nonstop condomless sex and fourteen creampies over 24 hours. She tries to break out midway but is restrained and forcibly creampied again and again, pleading that the pounding is too rough and will break her. Even when she cums or attempts to flee, the ordeal never ends; the unrelenting forced pleasure culminates in a group assault that leaves her completely conquered and obedient.