 Anton Ludvik, aka Gerard, is vice-minister of Foreign Affairs of Czechoslovakia. He realizes he is watched and followed. One day, he is arrested and put into jail, in solitary confinement. Will be shown the mental tortures during the investigations and how a faithful top-ranking civil servant is made to confess to treason. Based on the true story of Czechoslovakian communist Artur London, this is not an anticommunist film but a plea against totalitaism.