Johnny Black has problems. After a safe job goes south on the Channel Islands, he finds himself behind bars in Jersey. Meanwhile back in London, vengeful copper Harry Blum is still gunning for Johnny and his mob. Can his wife Billie and his trusted lieutenant Jack keep the Firm together while Johnny serves his time? But Harry soon becomes the least of Johnny's problems as the Nazis occupy the islands. Now he has to make some serious choices about how he's going to spend the rest of the war. And does he really have it in him to turn traitor?