1940, Jersey. When Nazi forces occupy Jersey in the English Channel Islands, Céline Huber, who is married to a German, must decide where her loyalty lies. Love for her island and fear for her Jewish friend Rachel soon propel her into a dangerous double life. Meanwhile, Céline’s husband Fred is conscripted into the Wehrmacht in occupied France. Horrified by Nazi acts of atrocity and torture, he soon becomes a double agent for the French Resistance.

Berlin, 1938: it’s the height of summer, and Germany is on the brink of war. When fledgling reporter Georgie Young is posted to Berlin, alongside fellow Londoner Max Spender, she knows they are entering the eye of the storm. Arriving to a city swathed in red flags and crawling with Nazis, Georgie feels helpless, witnessing innocent people being torn from their homes. As tensions rise, she realises she and Max have to act - even if it means putting their lives on the line. 

Each morning Livia Moretti makes her way from an apartment overlooking Florence’s famous Duomo to a nearby café, where she drinks espresso and reads the newspaper. To the crowds of tourists who pass by, nothing about Livia will be memorable. She is simply an old lady. They walk on without knowing the part she played in ensuring the future of this beautiful city. And to Livia now, those dark days feel very far away. But today, when she opens the paper, she sees a name she has not heard for a long time. A name that will bring memories flooding back.

Present day, London: When Sophie discovers a photograph of her great aunt Vivi from World War II, it throws her into a world of confusion. Because, as she learns about this secret relative, she quickly realizes that the photograph doesn’t fit with her family’s story. It shows Vivi leaving an address associated with a spy network in London - a place she had no reason to be - and it is dated right before she disappeared. 

In the small French town of Colmar, swastikas hang from lampposts, tanks are lined up outside the town hall, and 21-year-old Marie-Claire is in love. She will do anything for her childhood friend Jacques, including spying on her German boss, Dietrich Kurtz. Anything to make Jacques see her in a new light, as something more than just a silly little girl. But when Jacques rejects her, everything changes. Mortified and stung, Marie-Claire feels the need for revenge. She turns her back on those she loves and is catapulted into a new life. 

Paris, 1941: Going against her mother’s orders, spirited Maggie devotes herself to the Resistance. Her life is a whirlwind of forged passports and secret midnight runs, helping Jews escape. Much to her high-society mother’s disapproval, she has fallen in love with Emil, a Jewish Resistance fighter who is wanted by the Nazis.  

As the German Luftwaffe begin a terrifying bombing campaign that will come to be known as the Blitz, thousands are evacuated to safety. But Lizzie Mackenzie finds herself heading toward London. She knows she must help in the war effort. But she has another reason for leaving the security of her Scottish village: the illegitimate child she gave up for adoption nearly five years before is somewhere in the city. And - as the bombs rain down - she will stop at nothing to find her and make sure her little girl is safe. 

Italy, 1938: When Stella arrives in Florence, it’s love at first sight. She is wowed by the rolling hills dotted with olive trees, the buttermilk villas with shuttered windows and terracotta roofs that glow gloriously in the sunlight. Even the breeze holds the scent of freedom - freedom from England, where the shadow of her past haunted her. 

Berlin, 1941. Felix Thalberg, a printer’s apprentice, has the weight of the world on his shoulders. His beloved city is changing under Nazi rule, and at home things are no better - Felix’s father hasn’t left the house since he was forced to wear a yellow star, and his mother grows thinner every day. Then one night, Felix meets a mysterious young woman in a crowded dance hall, and his life is changed forever. Hannah is like a rush of fresh air into his gloomy, stagnant life, and Felix finds himself instantly, powerfully infatuated with her.

Following the death of her mother, Becky begins the sad task of sorting through her empty flat. Starting with the letters piling up on the doormat, she finds an envelope post-marked from Cornwall. In it is a letter that will change her life forever. A desperate plea from her mother's elderly cousin, Olivia, to help save her beloved home. Becky arrives at Chynalls to find the beautiful old house crumbling into the ground and Olivia stuck in hospital with no hope of being discharged until her home is made habitable.

1944, London. When Lily meets enigmatic GI Matthew in war-torn London, she doesn’t expect to fall in love. While her sister starts a reckless affair with another GI, Lily tries to hide her growing feelings for Matthew. But Matthew has a devastating secret. One that could change their lives forever.

Loch Ewe, 1940. When gamekeeper's daughter Flora's remote highland village finds itself the base for the Royal Navy's Arctic convoys, life in her close-knit community changes forever. In defiance of his disapproving father, the laird's son falls in love with Flora, and as tensions build in their disrupted home, any chance of their happiness seems doomed.

In the summer of 1942, as war rages across Europe, a series of anonymous leaflets appears around the University of Munich, speaking out against escalating Nazi atrocities. The leaflets are hidden in public places or mailed to addresses selected at random from the phone book. Natalya Petrovich, a student, knows who is behind the leaflets - a secret group called the White Rose, led by siblings Hans and Sophie Scholl and their friends. As a volunteer nurse on the Russian front, Natalya witnessed the horrors of war firsthand.

In 1943, Contessa Sofia de' Corsi's peaceful Tuscan villa among the olive groves is upturned by the sudden arrival of German soldiers. Desperate to fight back, she agrees to shelter a wounded British radio engineer in her home, keeping him hidden from her husband, Lorenzo - knowing that she is putting all of their lives at risk. When Maxine, an Italian-American working for the resistance, arrives on Sofia's doorstep, the pair forge an uneasy alliance. Feisty, independent Maxine promised herself never to fall in love.

Germany, 1939. A tumbledown farmhouse, on the outskirts of a close-knit village in the heart of the rolling hills of Bavaria. A once happy family home torn apart by Nazi rule. And one young girl who refuses to give up on what she believes in...London, 2018: When 94-year-old Imogen receives a letter addressed to her in neat, unfamiliar handwriting, she notices the postmark is stamped from Germany - and it sends shivers down her spine....