A man named Ichiju visits Soapland due to his wife being too tired from childcare to have sex with him. There he encounters a beautiful married woman named Kanako, who attends the same class as his son. Feeling awkward, she reassures him by saying, "It can be our little secret." Despite feeling guilty, Ichiju gives in to the temptation caused by both his wife's friend and the thrill of doing something forbidden. As a result, he finds himself returning to Soapland again and again. Note that the recorded contents may vary depending on the distribution method used.