The continent of Ether is shrouded in thick fog and has not seen the sun since its skies were captured by Desh-Tir, an evil being whose physical nature cannot be determined. Only by combining their magical abilities, half-brothers, princes Lizaer and Ariton, hate each other friend, can loosen the stranglehold of Desh-Tir. With the help of magicians from the Commonwealth of the Seven, the brothers finally defeat the evil creature, but at the moment of the fight, particles of its essence penetrate their minds. Now both brothers are obsessed with the idea of destroying each other, and this becomes the cause of a bloody war between the forest clans of Deshir and the inhabitants of the city of Itarra...