By July 1943, the full extent of Hitler s failed gamble in the East had become clear. After failing to deliver knock-out blows at Stalingrad and Moscow, his army was now at the mercy of the vast Soviet war machine. With its huge resources and seemingly limitless numbers of men, the Red Army slowly pushed the Germans back out of Russia through Ukraine, Poland, the Balkans and Hungary. This was war on a monster scale, pitching armies of millions against each other. But it was also a war fought by small bands of partisans, men like Tito in Yugoslavia, leading guerrilla bands against Nazi forces.

Mallory and Miller are back. It seems that there was traitor with them at Navarone, whom they thought was executed. But it seems that not only was he not executed, and he was not a traitor but a German spy. Intelligence believes he made it to Yugoslavia and is now with the Partisans. So, Mallory and Miller being the only ones who can positively identify him are sent along with a unit called Force 10, which is led by Colonel Barnsby, who objects to their presence. It seems that Force 10 has a mission of their own which Mallory and Miller know nothing about. When their plane is shot and most of the team is killed, they mistakenly believe that some of the locals they meet are Partisans but in reality are German Allies, so they are taken prisoner, and have to convince the German commander that they are not spies or else they will be killed.

A group of medical aid workers in former Yugoslavia begin to leave for Kosovo when they are kidnapped by a masked Serbian gang of organ traffickers.