With her husband working overtime late into the night every day and her teenage son out playing, Reiko has nothing to do with her bored, young womanhood. One day, her son's childhood friend, Saito, comes to visit her for the first time in a long time and she starts talking to him.... At teenage age, Saito, who he has admired for a long time, can no longer resist Reiko's sexy behavior and when Reiko leaves her desk, he starts touching his crotch.... Seeing this, Reiko decides to release her pent-up sexual desires with the boy....