The Prince's Celestial Daughter

Celestia is banished for severing a Red Thread of Fate. Taken in by Crown Prince Damian Sterling, she helps him overcome plots by Second Prince Alaric and the Empress Dowager. Celestia is revealed to be the abandoned daughter of Second Prince Alaric. She assists Damian Sterling in suppressing rebellion, leading to his ascension as Emperor. Celestia returns to the heavens.