The disaster caused by humans destroyed everything about the elf girl Tugu - her home, her relatives and friends, and her supposedly peaceful life. With nothing, she was accidentally rescued by a human boy named Seren. His appearance was like a ray of sunshine, illuminating the girl surrounded by darkness, fear and cold, and giving her infinite courage. However, it is a ray of cold sunshine after all - a ray of unreal sunshine, which can never give the girl the warmth she longs for. It is cruel, leaving some illusory and misty hopes, making her despair in getting hope. That cruel sunshine is like the betrayal of a young man, completely breaking the last fantasy in the girl's heart. So, is revenge or forgiveness waiting for the girl?