From the depths of the universe Earth can hear the radio signals of intelligent beings from a planet of the star system Alpha Cassiopeiae in the Cassiopeia (constellation). A project is set up, proposed by the young inventor Vitya Sereda, to send a spaceship to reach the planet - but the flight will last for decades, so the crew of the spaceship "Dawn " (Starship relativistic nuclear annihilation), is to be recruited from teenage students.