The main characters of the action-packed novel by the popular American science fiction writer R. Allen are lieutenants of the intelligence service of the Larson wife. They receive a task: to assemble a transmitter on a planet captured by the Guardians, descendants of extremists who once escaped from Earth. With the help of the transmitter, it is planned to deliver five thousand soldiers of the League of Planets (something like UN troops) to the occupied planet. The Guardians are stupid and cruel, and therefore the Larson mission is a super-risky, deadly enterprise...