After Nazi Germany invades the British Channel Islands in the summer of 1940, the occupiers and the occupied settle into an uneasy coexistence. But when does cooperation become collaboration for islanders just trying to survive? How tolerant can the German commandant be before falling under the suspicious eye of Berlin? This gripping British drama series tells of the stresses and strains, loyalties and loves of civilians and soldiers alike, in a world where shades of gray blur the hard line between black and white. Passion battles against restraint. Pragmatism struggles with principle. And internal conflicts rage as fiercely as those on the battlefield. Ultimately, both sides find they are compromised as much by the actions of their compatriots as they are by the enemy that is always at the door.