One day, a married couple orders a pizza delivery. When the delivery man meets the wife, "Rihou," he becomes instantly captivated by her appearance. From that moment on, he becomes obsessed with her. Later, the husband places another pizza order, secretly plotting to have his wife seduced. Unable to restrain himself any longer, the delivery man forcefully initiates erotic acts right at the front door. Shocked at first, Rihou gradually succumbs to his charm and begins willingly taking on deliveries herself. The story unfolds as love and desire intertwine in a series of intense encounters.