Newly married housewife Rika has a strong concept of chastity, has never had an affair, and lives happily with her husband. One day, Rika sustained a sprain while doing housework, so she decided to call a dispatched massage service. Sakai, a chiropractor, gives her a massage and treats her sensitive areas, which irritates her body and gradually makes her addicted to it. It was obvious that she didn't like it for a massage, so she played with her crotch and breasts, and she couldn't hold back anymore and ended up cumming...