Chaol Estfall, captain of the royal guard of Adarlan and Selene Sardothin's closest friend, is seriously injured in a battle with demons who have captured the capital of the kingdom and destroyed the glass castle. The only thing that can help him is a trip to distant Attica, the capital of a powerful empire, where skilled healers who can work miracles live in a high tower. In addition, Chaol has another task - in the difficult times that have come, to convince the ruler of the Southern Continent to unite with him in an alliance against demons and to provide support to their neighbors. Otherwise, darkness will fall not only on Erilea, but will cover all lands and continents.