Sora, a young woman carrying the rare power of Holy Blood, is seized and taken to the Dragon Palace as a living key to an ancient prophecy. Lucius, the empire’s feared Black Dragon commander, is ordered to break her will and prepare her for the tyrant’s ritual. Instead, their dangerous alliance deepens as Sora challenges his iron loyalty and Lucius risks everything to shield her from the throne. When she overthrows the Dragon King at the cost of her own life, Lucius unleashes a devastating wrath. Yet Sora rises again as the Supreme Dragon Mother, and ten thousand dragons kneel before her. In a realm ruled by fire and fate, who will claim the final vow?