jun, a housewife suffering from a sexless marriage, responds to an ad and spends the night at a student's house with only one condom. After quickly using the condom for sex, she can't satisfy the man with just one orgasm and ends up allowing raw sex. Although they agree to pretend the second round of sex never happened, the real pleasure lingers in their minds, and they find themselves drawn to each other again as the time to return home approaches.