Realties is, at its core, a battle between good and evil with Biblical overtones. On the evil side (and the protagonist of the novel) is Illyad, a physically huge figure who thinks nothing of killing both those who follow him (primarily through intimidation) and those who oppose him. He possesses time control powers but he uses them for far more than simply slipping back and forth between the three time eras he holds sway over on the distant planet Valleria. He uses his temporal abilities to age his opponents to the point of death and causes buildings to fall by aging their support structures. Illyad, by his own words, craves power above all things, including women and drink (although he craves them as well).