A Middle East allied officer, Themis, is parachuting in occupied Greece to organize a sabotage in the Meteora region, but is betrayed to the Germans and falls into ambush. Before retiring, he calls Fotis, a student who had hidden his house, and urges him to go to Athens and meet an Aristides. Despite the mobilization of the Germans who perform all the hostages they have captured, including his father, Fotis finally arrives in Athens, meets with Aristides and accepts to cooperate with him. With the name of Kostas Alexandrou he catches a room in the Papadima family home, falls in love with their daughter Anna and becomes a "friend" with German Major Karl Asberg. He accepts the co-operation proposed by Carl "to become his agent" to suppress the rebels.
