You have to pay for everything. For the opportunity to live with dignity - with sweat and blood, for strength and dexterity - with pain in overworked muscles and time, for power and glory they often pay with their souls. What will humanity give for the opportunity to become something more? Will the price be too high? Will the human race survive when faced with a mind completely different from its own? The hero of the book did not want wealth, power, or strength. He simply lived like ordinary people live. A chance meeting with hostile strangers disrupted my usual existence, forcing me to make decisions that seemed too difficult just yesterday. Now, to his own surprise, he is a warrior. However, are aliens hostile? And who is more dangerous - strangers who kill people or people who, by the will of fate, have received part of alien abilities?