A cruel landlord’s son traps adult sisters Asuka and Ayami in an abusive training scenario. After losing their parents in an accident, the sisters discover a huge debt. Asuka leaves her adult-school role-play setting and begins working as an office clerk at the landlord’s factory after he agrees to wait for their overdue rent. One day, the landlord’s son suddenly arrives and says the arrangement has changed. When they cannot pay immediately, he forces himself on Ayami and sexually abuses her. Asuka returns home to find the assault already underway, leaving both sisters caught in his coercive scheme.