Lily, a girl from a remote frontier, lives a peaceful life in her homeland. Her parents are transferred to an unstable Eastern fortress, leaving Lily to be cared for by relatives in the royal capital. She hopes to return one day by excelling in the capital. However, her life changes drastically when she is unexpectedly selected as a candidate for Crown Princess—even though she never desired to be a saint. Meanwhile, the kingdom faces a crisis. Lily must balance her reluctant rise with her true intentions and the challenges of court life.