Ayano Uchida, a Milf living alone, is visited by her son who comes home for a break. Seeing her late husband's spitting image in her son, Ayano feels a sudden surge of desire deep within. She gives her sleeping son a tongue kiss, and when he wakes up in shock and tries to pull away, her passion shows no sign of fading. That night, she sneaks into her son's room, makes a nighttime advance, and slowly starts sucking his cock. Her lust knows no bounds, and their incestuous relationship grows deeper and more intense.