Reika Aizumi lived peacefully with her husband until one day her brother-in-law, who had been serving time, was released and came to visit. Seeing Reika again after so long, he was overwhelmed with lust and raped her. Unaware of what had happened, her husband agreed to let his brother stay at their home, welcoming him without suspicion. As the household's delicate balance begins to crumble, new turmoil erupts within the family.