Jersey, 1942. As Hitler strengthens his grip on Western Europe, The Channel Islands fall into occupied hands. Used by the Germans as a base where prisoners of war are put to work in slave labour camps, the residents of Jersey face a future of uncertainty and fear which frays tempers and tests loyalties among the tight-knit island community.
One such resident is Louisa Gould (Jenny Seagrove), who refuses to give up hope for the island she holds so dear, for her sons fighting abroad and for a rescue by Churchill’s forces that never seems to materialise.
When a Russian soldier called Feodor (Julian Kostov) escapes the labour camps, seeking shelter, Lou realises she can’t simply hand him back. Alongside her sister Ivy (Amanda Abbington), brother Harold (Ronan Keating) and the village postmaster Arthur (John Hannah), Lou decides to harbour the fugitive, striking up a bond with the young, intelligent man she calls Bill for short, whom she soon treats as her own.
As rations on the island become scarcer and tensions rise among the inhabitants, Lou’s defiant attitude and cavalier approach to hiding the fugitive in plain sight arouses suspicion from the Nazis and distrust among her neighbours. Facing the prospect of capture and deportation to Germany, Lou plays a dangerous game of cat and mouse to keep Bill safe from harm, refusing to believe that the wider community will betray her. In doing so, she risks paying the ultimate sacrifice for her duty to her friends and a young man caught up in the horror of war…