A book about how intelligent beings help each other develop and survive, overcoming difficulties and taking the side of good. The worlds of high intelligence, from the point of view of which the Earth is a planet of barbarians, turn out to be powerless, and only a schoolboy from a barbarian planet can win a battle on a Galactic scale. Going through difficult trials and adventures that require courage, goodness and ethics, all intelligent people learn and become even more intelligent, fighting for the life of every creature and learning more deeply about themselves and each other.