A forbidden love story between mother and son set at a traditional hot spring inn surrounded by lush mountains. Fifteen years after her divorce, a mother who raised her son alone finds her emotions stirred when he gifts her a hot spring trip—their first family vacation together. The quiet countryside scenery of an unfamiliar place and the soothing scent of warm springs awaken long-suppressed feelings between them. The intense romance that develops transcends the boundaries of family, evolving into a pure and passionate love. Directed by Koudai Shou, this powerful film contains two unforgettable stories that captivate viewers with their emotional intensity.