Thorn from the Dhuss people, warrior, philosopher, magician - who is he and why did he appear in the World of the Seven Beasts? Who is haunting him and why does he never talk about his past even to those with whom he fought shoulder to shoulder? What is his mission, and is it not connected with the attack on the lands of people, Aelv, Sidhe and other intelligent inhabitants of Rayleg, a terrible disaster - Rot, which neither the Masters of Death of the terrible and mysterious country of Necropolis, nor the wizards of the Power of Navsinai can cope with? Or maybe Thorn will become the final argument in their centuries-old and bloody confrontation?