When fifteen-year-old Walter met the Mentor, he thought that he had found his way. He gave up his old life in order to learn how to control the minds of people, but the price was too high. He fell in love with a girl he had no right to love and tried to make friends he could not have. How to make the right choice and remain honest with yourself? How to win a war that you have not declared? This is a story about growing up, responsibility and decision-making, on which depends no less than the fate of the world.