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In this tale of espionage and greed, all the trouble is caused by the invention of a new source of energy, Krakatit, a small substance containing incredible power. A young scientist steals the Krakatit and is pursued by a scientist working for an avaricious American capitalist. In the climax, the young thief releases the Krakatit's energy and the result destroys all life but leaves buildings untouched. Meanwhile, his pursuer, grows disillusioned and moves to a quiet, simple village. This is filmmaker Vavra Otakar's second version of the story. He made the first in 1948.