Jan Smudek, a former student of the University of Prague, after a stay in a concentration camp, travels in a comfortable automobile the roads of Czechoslovakia. As soon as he is in a safe place, Jan sets up radio broadcasts to call on the people to actively fight fascism. Every day at noon the "Svoboda" radio station broadcasts the truth about Soviet Russia on the air. Hitlerite spies pursue him, but every time he is threatened ordinary people come to his aid.