Since her husband is away on a work assignment, Miki lives alone with her only son. Still young and naive at heart, his body is maturing rapidly, reaching the age where he's about to begin his romantic experiences. When Miki overhears her son's plan to visit a brothel with his delinquent friends, she becomes deeply worried. An idea occurs to her—use her own body to recreate the experience of a brothel at home and satisfy her son herself. One after another, they dive into reenactments of various sex services: pink salons, delivery health, soaplands. Drawn deeper into this world of oil and lotion, mother and son become increasingly immersed in these taboo encounters. Within this surreal space, far removed from ordinary life, their bond grows ever more intimate.