Everyone mocks Alice, a disgraced wife raising her two ""bastard kids"" in a stable. The Lincoln family treats them like dirt. But on the twins' fifth birthday, the boy sprouts golden dragon horns and the girl black wings. They carry the legendary dragon bloodline! When their cruel stepmother throws them into the river, their dragon bloodline awakens. The son searches for their Dragon King father, while the daughter fights to save their mother. Then Jack, the King of the Underworld, appears—and everyone is stunned. The ""lowborn"" mother and her kids are actually the Dragon King’s wife and heirs!