Daphne, adopted daughter of a forest border herbalist, sneaks into spirit essence trafficking to save her foster father. She flees into the unicorn carriage of Orion, the Third Prince of the Elf Court, and conceives twins after one night together. She hides her secret and works as a temple herbalist, suffering endless humiliation for her low birth. Selena, the current saint, pretends she saved Orion and teams up with Daphne’s foster mother to set her up. When clues surface, Daphne’s real identity is uncovered—the long-lost true saint of the Moon Court. She awakens the Moon Goddess’s healing magic and stands with Orion to protect their children and the court.