One day, suddenly, Ao and her husband Daisuke are abducted by a mysterious man. Present were two men related to them: Sakawa from the construction company, Tonoda their neighbor, and Kida, a student under Ao's care. The five of them couldn't hide their agitation... At that moment, along with the voice saying 'Everyone will now have SEX,' a timer appeared on the electronic display board and began counting down. After much internal struggle, Ao and Daisuke had sex in front of the three others. The couple should have been able to leave the room, but Sakawa interfered, leaving only Ao trapped in the cage...
