Born with a red birthmark, Lyra is secretly the kingdom’s true Lucky Princess, but her mother swaps her with a maid’s daughter and lets her grow up abused as an outcast. Seventeen years later, Lyra is sent to marry Dragon King Aiden in the fake princess’s place. As soon as she leaves, her homeland declines while Aiden’s kingdom prospers. When the truth is revealed, her family begs her to return, but Lyra chooses the kingdom that embraced her and becomes its honored queen.