Yuko (Hashino), an OL on the verge of marriage commuting to a trading company in the capital, is kidnapped by yakuza and, after being violently assaulted by pleasure seekers, is confined in a cage. In the same cage is Yoriko (Kato), who, like Yuko, has been kidnapped and confined for training. Yuko endures hellish days... Unaware that Yoriko, who believes they share the same plight, is also part of the pleasure seekers' group...