

On her coronation day, Empress Yedda Lara orders her betrothed, Ronan Vance, thrown into the furnace for allegedly draining the empire's dragon vein. Ten years ago, Ronan actually tore out his own dragon core to seal the demons beneath them, but now, he stands branded a traitor.Before he can burn, the ancient Vowstone shatters, unleashing memories that expose the truth to the entire court: it was Ronan who saved Yedda's life as a child, sacrificing his blood, his horns, and his power to protect her, while the true villain, Chancellor Cyrus, stole her memories and framed him.As her hatred shatters into agonizing guilt, the dragon vein begins to die. Desperate and broken, the empress falls to her knees, begging the man she just condemned to save them all.

Yanxing Shen, born into a military family and serving as a female general, was granted the honor of becoming a consort in the imperial palace by the emperor. Upon learning of this, Consort Ning, the most favored consort of the palace, framed Yanxing, leading to the overnight massacre of her entire family. Seeking justice from the emperor, Yanxing found that instead of punishing Consort Ning, he stripped her of her title as a female general. Carrying a deep-seated grudge, Yanxing resolutely embarked on a path of revenge, determined to seek justice for herself. From an official courtesan, she ascended to become a palace lady, and then replaced Consort Ning as the most favored consort. Just as she finally avenged herself, she discovered that her true enemy was someone else.

Yeon-Woo, the heir of the organization Sipgangpa, disguises herself as a boy to infiltrate an all-boys school and eliminate the heir of the rival organization Makgangpa. However, as she catches the attention of a handsome trio, romance begins to blossom in her used-to-be noir life. One of the three is apparently the heir of Makgangpa—will Yeon-Woo be able to complete her mission without falling in love?