Hikaru Shidou, Umi Ryuuzaki, and Fuu Hououji aren't from Cephiro. While on a school field trip to the Tokyo Tower, the three girls' minds are on anything but different worlds filled with magic and wonder. That is, until Princess Emeraude, the Pillar of Cephiro, cries out for the Magic Knights to save her world--and that just happens to be those three!