Mature married women enjoy solo trips against the beautiful seasonal landscapes of Japan. The true purpose of their journey is to indulge in one-night stands with charming new men they meet along the way. Sixty-year-old Kanako Nakajou (Spring Road), forty-year-old Rinko Nomiya (Summer Road), fifty-year-old Utako Dougauchi (Summer Road), and Aiko Kimoto (Winter Road) travel freely across the Japanese archipelago, each showcasing their unique allure. Encounters on the road lead to passionate affairs with men unlike their husbands, and the fleeting moments of pleasure make their hearts race.