About the book: year / The boy Gleb, who is twelve years old, studying in a technical circle, together with his friends assembles a three-meter rocket. An unplanned start of which could lead to the outbreak of a nuclear war, the action takes place in 1983-1984. But it doesn’t lead... And as luck would have it, everything happens because of a girl, his classmate, with whom they are seriously quarreling. After the rocket finally took off and exploded in the air, Gleb is placed in a children's psychiatric hospital. Former friends betray him, refusing to be friends with him. But in the hospital he meets the guys who will become his true friends, and he also learns that his classmate, who caused the launch, has disappeared. In general, this book is not so much about adventure, but about the feeling of friendship and first love.