Cephiro is the magical world where citizens, creatures and fairies lived in harmony and peace. But suddenly Zagato kidnaps Emeraude and imprisoned her under the chamber and set all the world in chaos by monsters. Princess Emeraude summons the three girls from Tokyo and became the Magic Knights and save Cephiro. The Magic Knights must find and revive the three Rune Gods and save her and the world of Cephiro. And on the Second Season Cephiro becomes a nothingness land and need to became chosen by the pillar of Cephiro.