"Mom, I'm sorry. If only I weren't sick, we could go to so many different places." The son, stricken with an incurable illness, accepts reality and resolves to keep living for the sake of the two of them. When his attending physician grants him permission to leave the hospital for a few days, he expresses his wish to see a beautiful flower field, sharing his heartfelt desire with his mother. Determined to fulfill her son's dream, she begins planning a hot spring trip for the two of them. Immersing themselves in the soothing warm waters, she resolves to overcome any hardship to bring light to her son's heart, making up her mind to enjoy this journey together no matter what.