Half a year after her husband's passing, Satoko's wounds were gradually healing thanks to her daughter and son-in-law's offer to live together. At the same time, her sexual desire was rekindling. This time, she was suffering from dissatisfaction... Her son-in-law, who had been watching his mother-in-law closely, was completely captivated by Satoko's charm. The insatiable mother-in-law and her son-in-law under the same roof. It was only a matter of time before mistakes happened.