On the threshold of 22nd century, furrowing the space, protagonist from the Free Search Group makes emergency landing on an unknown planet where he must stay. People who are living on this planet have remained at the stone level of the 20th century, with its social problems, miserable ecology and shaky world..

Maxim Kammerer fights for his love and freedom. He leads a rebel movement challenging the five greedy rulers. One of the rulers, Strannik, knows how dangerous Maxim can be. He makes up his mind to stop the young man at any cost. The last close fight will decide everything.