About the book: 2022 / By coincidence, a space fleet pilot and his friend and assistant find themselves as guards on a closed prison planet. One fine day, the prisoners rebel and want to escape on the Planets mail ship. To prevent this, Sashka and Dimka themselves sneak onto the ship and fly off into deep space, hoping to return home. Their ship goes astray and they end up on an unknown planet, very similar to Earth, where they learn the secret of the origin of humanity.