!!! Attention: Very violent content! !!! Keisuke Takatou wakes up in a featureless white room, blind to how and while he arrived. While exploring his whereabouts, he notices six acquainted women huddled round a big monitor—his early life pal Kanae Hokari, the magnificence president Miyakou Ando, his English trainer Natsuki Aoi, his junior Rika Makiba, and his classmates Rinne Byakuya and Nemu Manaka. As they try to make feel in their present day situation, a voice unexpectedly announces via the monitor, "The sport will now begin." The guidelines of the sport are easy but brutal; assigned because the "unlocker," Keisuke have to pick one of the women as his "keyhole" and violate her in a selected manner. Only after he does this for 5 rounds will the organization be promised freedom to the out of doors world. Refusing to renowned the situation, Miyakou vehemently denies her participation. Suddenly, the whole room is going dark. When the lighting fixtures come again on, Miyakou is strapped to an electric powered chair. "Withdrawal from the sport will bring about death," publicizes the mysterious voice because the chair electrocutes her to death. Left and not using a different option, the terrified captives concede, and as a result starts the sadistic sport in an effort to wake up their carnal dreams via pain—and pleasure.