Sarah sacrifices a decade of her youth working grueling double shifts to nurse a sickly white serpent back to health, leaving her vanity-obsessed sister Emma with an energetic black viper. When a cataclysmic deluge submerges their province, the healed serpent ascends into a radiant divine beast, yet cold-heartedly rescues Emma while abandoning Sarah to drown in the torrents.
Awakening in the damp forest on the morning of the original discovery, Sarah remembers every agonizing drop of river water and the serpent's rank ingratitude. Rejecting the treacherous divine beast without hesitation, she claims the vicious black creature, resolved to cultivate its ferocious venom and dismantle the ungrateful celestial bloodlines that left her to rot.
