Kana is a married woman who works as an insurance salesperson. Recently, Yoshimura, the chiropractor Kana is in charge of sales, is a so-called perverted old man, and he has been calling her to his house for various reasons. Kana is kind and weak to pressure, so she can't firmly refuse... One day, she sprains her ankle on the way home from a sales call. The next day, she goes back to the sales call, but Yoshimura notices something strange about her ankle and forcefully encourages her to get a treatment. Kana is unaware of Yoshimura's obscene plan, and reluctantly ends up getting the treatment...