Hitomi, a married woman who is bored with her marriage and her sex life with her husband, registers on a dating site to kill time, but is fed up with the invitations she receives from boring men... One day, she notices that she has received an email from a woman, and out of curiosity, she calls the number listed... The person on the other end is Chisato, a married woman who is just as hungry for excitement as Hitomi...