The year 3587: Helpless, the peoples of the Milky Way face an overwhelming threat. Destructive space quakes threaten the solar systems. If the quakes continue to intensify, numerous worlds will be destroyed. At the same time, the horde leader Amtranik awakens from a 1.2 million-year slumber. Once he was the leader of the so-called Fighters of Garbesch, who brought a terrible war to the Milky Way. Now he wants to complete the ancient plan - for he sees in humans the end of a gray prehistory that he must annihilate. There is only one who can stop Amtranik: it is the Terran Jen Salik, the newest member of an ancient order. The Knights of the Depths had stood against the hordes of Garbesch eons ago. Now a duel is about to take place between the knight and the horde leader - a clash of ancient hereditary enemies.