In the north of the huge continent of Eon, people have been at war since ancient times with the mysterious tribes of the Kvars, the twilight people. As a result, the Quars were driven out of their lands, and the mysterious Border of Shadows lay between them and the people. Anyone who crossed this border never came back or went crazy. And one day it happened that a couple of fanderlings, creatures friendly to people, picked up a strange boy near the Border of Shadows, a human child who was taken from the other side and left in the forest by the twilight riders. And the next day, in the bedroom of the royal castle, the prince regent, temporarily replacing the captive ruler of the kingdom of the Southern Reach, is brutally murdered. The throne is occupied by the willful princess Bryony and the sickly, nightmare-ridden prince Barrick. Meanwhile, the twilight people of the Qvars prepare for the final battle with the people, and the army of shadows goes on the march.