This is a fantasy world where humans and dragons coexist. The royal family of the Dawn Kingdom inherits the sacred dragon blood, and Princess Aurelia accidentally saves Silas, the prince of a neighboring country. The two made a promise in the Rose Garden, and Silas promised to protect her forever. However, Silas became ruthless in order to gain the power of dragon blood. He betrayed love and covenant, led an army to invade Aurelia's country, massacred the people, killed Aurelia's father with his own hands, and captured the royal capital. He imprisoned and tortured Aurelia in an attempt to inspire the sacred blood in her body for his own use. The former lover turned into a tormentor, and the former promise turned into a cruel prison. When the seal is loosened and the evil god awakens, Aurelia must choose between revenge and saving the world, and the biggest enemy she faces is the person she once loved most.