Comfortable World of Sex [떡 편한 세상]

A couple have been married for more than 10 years. They have long forgotten the pleasures of the couple's secret sex life. Through an accidental opportunity, Joo-hee has a relationship with the man next door and Kang-in has a relationship with the woman who has moved in. In order to recover the well-dried fountain of pleasure, each other's secret and bizarre affair begins.