Newly married housewife Rika has a strong concept of chastity, has never had an affair, and lives happily with her husband. One day, Rika suffered a sprain while doing her housework, so she decided to call a dispatched massage service. She gets massaged by Sakai, a chiropractor, who treats her sensitive areas. Her body becomes flushed and she gradually becomes addicted to it. It was obviously unpleasant for her to be massaging him, so he played with her crotch and breasts, and she couldn't hold back anymore and ended up cumming...