Shinichi is an office worker in his 40s and has a wife and children, but he was conscious of his mother as the opposite sex. One day, I tried to confide in my mother while my family was away. Saya refused once, but after being asked many times, they went on a trip without telling their families. Today's only promise... To help my son, I tell myself so, but my body asks for a man. The intention of only one time drowns in pleasure and crosses over and over again...