Theon, a 30-year-old man who had always been interested in magic, found himself reborn in a new world after his unexpected death. However, he soon discovered that this world lacked magic, leaving him feeling defeated and apathetic. A series of events eventually led him to become determined to create magic himself, and he began researching and studying the subject. Through his efforts, Theon eventually plays a key role in saving his world from a devastating disease and an enemy that could only be defeated with magic.