In late 1945, a German doctor and his two teenaged daughters arrive by freighter into the sweltering, squalid port of Cayenne in French Guyana. They enter the South American country with forged passports and under assumed names.

But the doctor is recognized by two people who were once in a Nazi labor camp, and now are in the employ of a group which is on the lookout for Fascist fugitives wanted by the Allied War Crimes Tribunal.

The two men, a middle-aged mute, and a young man of nineteen, are obsessed with bringing to justice the criminals who once ran the camp in which they were...