Since her husband died of illness, Nozomi and her son have lived together, but as her son grows up, their happy life is about to change. Her son gets a girlfriend and starts to distance himself from his parents. Nozomi feels increasingly lonely and is unable to congratulate him. Her love for her son, who has nowhere to go, runs wild in the wrong direction. Calling out her son's name, she indulges in masturbation, and using the technique that once captivated her husband, she invites him into a taboo exchange of bodily fluids. Her confused son soon becomes addicted to Nozomi's carnal service... The two are immersed in a shocking world of mother-son love that they cannot tell anyone about!