The fragile peace is broken. The war begins. She, without stopping, absorbs country after country, involving more and more events and destinies in the interweaving of the plot. Against the background of human destinies, battles, intrigues between the states of the medieval world, so similar to those on earth, a threat arises to the very existence of people. Who started the war, what goals do the heroes of the book pursue, what is the threat to the world and is it possible to cope with it? About all this - in the first book "Invasion", the cycle "The Fall of Tjor".