Magic Knight Rayearth began life as a manga series by the four women team of Clamp, who are also know for Cardcaptor Sakura, X, XXX Holic, and Tsubasa Chronicle. In this series, a trio of young girls are summoned to a mystical world in order to rescue the princess and save it from destruction. That sounds like every fantasy story ever, doesn't it? How does Rayearth's first season compare to stories it copies? Watch to find out.
https://www.youtube.com/watch?v=egpKgtk4r1M