They say the world isn't always what it seems to be, and quite often that turns out to be the truth. Unknown to the world at large there is an Inner World of Magic, and out of that world come Magister Magi, Mages capable of performing great feats of magic, with followers who protect them with all their might. Magic isn't the only truth in the world, as there are also Ninja, Ki-Users, Demons, Half-'Demons', and even Robots born from the minds of Super Scientists.
In particular, one such aspiring Magister Magi by the name of Negi Springfield has graduated from Magic Academy recently, and has been given a job in the real world to continue his training… That of an English Professor at Mahora Academy. Even though he's only 10 years old, he has had to teach and maintain control of a class of 31 Middle School girls! Not an easy task at all.