This Synopsis was written by me.
Hikaru Shido, Umi Ryuzaki, and Fuu Hooji were three ordinary schoolgirls on a field trip to Tokyo Tower. But when a mysterious light engulfed them, they were transported to another world called Cephiro. There, they met Master Mage Clef, who told them that they were summoned to Cephiro by its princess, Emeraude. Emeraude, being the "pillar" of Ceiphiro, held the world together by praying for its peace and well being. But she had been captured and held prisoner by High Priest Zagato. Clef told the girls that in order for them to return to their world and save Cephiro they must rescue Emeraude by becoming Magic Knights. Accompanied by the frisky but helpful creature, Mokona, the girls set out to find the princess and defeat Zagato. Along the way, they must learn to use and enhance their magical powers and become skilled with their weapons in order to defend against the many monsters that roam the collapsing Cephiro. But they also make many friends and allies along the way: the bold swordsman Ferio(and Princess Emeraude's long lost brother), the cunning dancer Caldina, the beast summoner Ascot, and Princess Emeraude's head guard Lafarga. A lot of them were being manipulated by Zagato at first, but the Magic Knights were able to help them see who the real villain was. In order to reach their full potential, the Knights had to find the legendary Rune Gods, animal spirits that could change into powerful robots in battle. The ending of the first series has quite a wicked twist when it's discovered that Princess Emeraude and Zagato were actually in love! The reason Zagato kidnapped Emeraude was because, as the pillar, her only purpose was to pray for the peace of Cephiro. In Cephiro, everything is determined by the will and held together by the positive thoughts of the pillar. So, the pillar is not allowed to have much freedom, especially to fall in love. Zagato, wanting Emeraude more than anything else, deemed this unfair and so captured her even though it meant disaster for Cephiro. After killing Zagato, the Magic Knights think that they have done the right thing. But Emeraude becomes so distraught from Zagato's death that she loses control of herself and starts attacking the Magic Knights with her own Rune God. But there was still a bit of goodness left inside of her which tells the Knights that they must kill her in order to save Cephiro and have a new pillar born. Reluctantly, the Knights fulfill her wish and are returned back to Tokyo, stricken and guilt-ridden.
In the second series, the Knights are mysteriously transported back to Cephiro, which is once again on the verge of destruction. Without a pillar, Cephiro is crumbling and the three kingdoms of Autozam, Farhen, and Cizeta begin to invade the vulnerable world, hoping to take it over by controlling the pillar system. But little do they realize that once they become the pillar, they won't be able to have any freedom of their own. The Magic Knights must get them to realize this before it's too late. Things get really complicated with the arrival of Lantis, Zagato's younger brother, and the appearance of the mysterious girl Nova, who's apparently a "shadow" of Hikaru's guilty and tragic heart. The search for the true pillar ensues, and the three kingdoms must set aside their differences in order to save Cephiro from an even greater enemy...