Celestine, the eldest daughter of the Saint Laurent family, was persecuted in her past life by her fiancé Darren, her stepsister Fiona, and her own father. She was stripped of her saintly destiny, had her arm severed, and was devoured by a serpent. Reborn, she resolutely plunges into the abyss of the midnight sun, unexpectedly rescuing and forming a contract with Ryan, the supreme dragon king imprisoned for a thousand years. Their souls become intertwined. Celestine subdues all beasts in the abyss and, together with the invincible dragon king, makes a grand return to the Beast Ceremony. She publicly exposes the conspiracy of her treacherous husband, mistress, and hypocritical father, ultimately ascending to the position of sect leader, marrying Ryan, and achieving her ultimate revenge.