During the World War II, the prisoners of a German camp in a Greek island are trying to escape. They not only want their freedom, but also seek an ineffable treasure hidden in a monastery at the summit of the island's mountain.

Katina, an impoverished Greek woman, tries to arrange the marriage of her shepherd son, Thanos, to Despina, the daughter of a wealthy landowner. But Despina’s father, Vlahopoulos refuses to give his blessings.