Giyoka Mitsuo, the managing director of Yabuta Construction, has gone missing. Mayu, his daughter who works in the secretarial department, searches for her father's whereabouts and arrives at Yamagiri Construction, only to find that it is a training ground for escort sex slaves run by the Yabuta Group. Mitsuo had also been involved in the training of escort sex slaves, but ironically, Mayu herself became a candidate for a sex slave. Mitsuo, who tried to protect Mayu, then becomes a target for the organization's purge…
