Ludger Cherish is the name a man from Earth takes after he is thrown into the world of a novel and watches the real Ludger, a newly hired professor, die in a terrorist attack on a train. Posing as him at Ceoren Academy, the empire's foremost magic school, he has to teach, pass as the man everyone expects, and stay clear of the school's authorities. What he does not know is that the original Ludger was tangled up with a dangerous secret society now watching the academy.