In an American station in the South Pole, the expatriated staff is about to return in three days to their homelands for six months before the arrival of a whiteout - a weather condition in which visibility and contrast are severely reduced by snow and wind of 160 km/h. When a pilot reports that he might have seen a corpse in the snow, U.S. Marshall Carrie Stetko flies to the location with the pilot Delfy and Dr. John Fury to investigate. Carrie has a traumatic experience in Miami and has already sent her resignation letter. They discover that the dead man is the geologist Weiss that is missing with two other scientists; further, Carrie finds evidences that he was murdered.

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