Is saving the world really worth it? As we come to the final chapter of the Walker chronicles Trilogy, this is a question Nick must answer for himself. War is breaking out in the streets and Tristan and his followers have become a true threat. The Third Division is doing its best to hold off the forces of darkness, but their enemies seem to be two steps ahead of them. If Nick wants to save the world from the Shades once and for all, he must venture to a land of myth and legend. He must lead his friends through the portal of Avalon.