Synopsis：Sisters Emma and Sarah discover two snakes in the forest: a powerful black serpent coils tightly around Emma, while a dying white serpent is taken home by Sarah. For ten years, Sarah works two jobs and devotes herself to nursing the fragile white snake, yet it never transforms. When a once‑in‑a‑century flood strikes, the white snake suddenly awakens as a Holy Light Serpent—but chooses to save only Emma. Sarah is swept away and drowns. As she opens her eyes again, she realizes she has returned to that very day—the moment they first found the two snakes…