Marina lives alone with her son while her husband is away on a long business trip. She sympathizes with her son's friend Koume's situation and ends up treating him kindly... However, Koume, who is starved of maternal love in a single-parent household, attracts her sympathy and takes advantage of her kindness, forcing a relationship on her. Even though it was beyond her control, Marina was reminded of her true self as a woman by her son's classmate's caresses and powerful thrusts that shook the depths of her vagina. She resists the repeated humiliation, but her body craves pleasure...