One cold winter night, Haesa seeks shelter in an old house in the mountains, where she meets a slumbering stranger named Yuan. That's when tragedy begins to befall Haesa's friends, plunging the young girl into a sad and lonely youth. Ten years later, as Yuan starts to regain his lost memories, he realizes that this cursed fate goes back much further, to a time only he can recall. But with sinister forces at play, will they be able to break the toxic cycle and step into the warmth of spring?