Based on a true story. Near the end of World War II, two German deserters are put in an Allied POW camp. When a rigid and militaristic German colonel learns about their desertion, he wants them court-martialed, even if the war is over. The uninterested Allied officers oblige him, and the two men face the firing squad on "the fifth day of peace".
Christina Fisher arrives in Sardinia to spend a holiday with her university friend, Francesco. As they are touring the island, they are trapped by mountain terrorists. Francesco is kidnapped, but Christina is permitted to leave. She is determined to contact the police, but is persuaded not to by Francesco's best friend, Gambino. Together they try to find the kidnappers, but she becomes suspicious of everyone including Gambino. Confused and paranoid, she sets out alone to contact the police.