Gaia no Matsuei summary: A love story of two people who are tossed around by fate, unaware of each other's true identities. Everything began with their meeting. Celine, the princess of the Kingdom of Earth, has been neglected by her fiancé and lives day by day in constant danger as her stepmother, Queen Catherine, plots her death. One day, when Celine is attacked by a magical beast, she is saved by a mysterious man named Alan. He then tells her, "In exchange for saving you, let me stay the night..."