With the help of her husband's parents, Riho is able to buy her dream home and lead a happy married life. However, her life is turned upside down by her husband's boss. While her husband is away, he takes advantage of his position and forces his bulging, veiny cock into Riho, recording the whole thing on video. Riho is exploited and given pleasure she has never felt with her husband, and her resistance gradually weakens, until she begins to seek pleasure and cock herself.