A story about a human servant's daughter who was the fiancée of a hero of the dragon deity clan. When it was discovered that she was the king's turn, the hero broke off their engagement, she was summoned to the royal palace, and she sought revenge in despair over everything.

Yuulia was picked up by the dragon deity clan as an infant and worked as a servant in their village. As a mage with high magical power, she traveled with the dragon deity clan's hero and accomplished the great deed of defeating the Demon King. She was engaged to the hero, but he tells her he will break off the engagement. The Dragon Deity clan's prince has recognized Yuulia as his fated partner and ordered her to be brought to the palace. Despite her refusal, the order is absolute, and she is forcibly confined as the prince's bride. Discriminated against and looked down upon by the women in the palace, Yuulia falls into despair, unable to believe in the prince's love or the word "fated partner." When she hears that the hero is to marry the prince's sister, she decides to take revenge.