It's a few years after the war, and the Šumava region resembles the Wild West - a no man's land, an El Dorado of adventurers, secret agents, smugglers, and border runners. A restless district patrolled by policemen and border guards trying to impose the rules of the new regime. It draws dramatic fates like a magnet. But one stands out. Twenty-four-year-old Josef Hasil first helps guard the border in the uniform of the National Security Corps, only to become, after February 1948, its most feared opponent - later dubbed by the secret police as the King of the Šumava. In the deep forests, in the marshes, but also in interrogation rooms and prison camps, a gripping story unfolds.