Ayuko and Miki are two sisters whose father has passed away and whose mother has leukemia and is not expected to live long. Ayuko's heart is on edge as she struggles to take care of her mother and younger sister, who cannot understand the seriousness of their mother's illness. Ayuko lives a stressful life that she cannot tell anyone about. But one day, Ayuko comes into contact with Sister Angela's kind feelings at the church on the hill...