1941: It takes strength to work on the docks, but the war demands all hands on deck, and the women are doing their best to fill the gap. Rosie is flourishing in her role as head welder while still keeping her double life a secret. But a dashing detective is forcing Rosie to choose between love and her duty. Gloria is hiding her own little secret - one that, if found out, could threaten not only her job but her life.

Alice Lake has arrived in London from Liverpool to start her training as a District Nurse, but her journey has been far from easy. Her parents think that she should settle down and get married, but she has already had her heart broken once and isn’t about to make the same mistake again. Alice and her best friend, Edith, are based in the East End, but before they’ve even got their smart new uniforms on, war breaks out, and Hitler’s bombs are raining down on London.

The railway girls have survived unsettling times, and while the bombings might have eased, their own turmoil has only just begun. With Christmas fast approaching, will their wishes come true?

At the heart of Dover's Market Square lies the Castle's Café. A bustling, homely place run by the formidable Nellie Castle and her six children. Since the scandalous birth of her beloved son 10 years before, Marianne, Nellie's eldest daughter, has preferred to stay in the kitchen, hidden away from the town gossips. Overcome with shame, Marianne has never revealed the name of Donny's father - not even to her own mother. But with World War II just around the corner, Marianne's past catches up with her. And suddenly the lives of the Castle family become a lot more complicated.

Maureen Jackson is a prisoner of her father's blackmail. Three years ago, she'd been hoping to marry Rory, the man of her dreams. However, after her mother's death, Maureen was left to care for her overbearing father. Now Rory is back in London with his pregnant wife and reminds Maureen of the life that should have been hers. With the war looming, Janet Ashley hopes to marry her sweetheart Mike, but her father refuses to grant them his blessing. Janet finds herself pregnant and her mother Peggy is determined to hold her family together.

Liverpool, 1939. Bella Rogers thought her life was just starting; she can’t wait to get married to her childhood sweetheart, Bobby. But when war is declared and Bobby is called up, his letters stop, leaving Bella heartbroken and alone. Then her family is torn apart by tragedy when her angelic 5-year-old sister dies from a terrible illness. They can barely afford a funeral, but the church is packed with the entire community, devastated for their loss. Grieving for her sister and lost love, Bella finds a job at the Bryant and May factory, making matches.

Following a humiliating experience involving the man she thought she’d marry, Iris Tredwick signs up to the Wrens in order to escape and - hopefully - find ‘the right sort’ of man to please her mother. After a bumpy start, Iris manages to befriend outspoken Mary and dreamer Sally as they are sent to their first posting - in Orkney. There she meets engineer Rob, whose flirtatious nature both charms and confounds straight-laced Iris. Much more appropriate for her is local doctor Stewart, if only she felt the same spark for him as she does for Rob.

When Jess bumps into Milan unexpectedly, sparks are reignited, and she wonders if she made a mistake finishing with him in Amberton. But matters are complicated when a film company arrives at Bentley Priory to make a morale-boosting film about the RAF. The lead actor is none other than Leonard Steele, a man from Jess’ past who could ruin everything she has worked so hard to build. 

Billeted together in the attic of Latimer House - a place where secrets abound - Evelyn, Betty and Judith soon form a bond of friendship that carries them through the war. Because nothing is stronger than women united. Tucked away in the Buckinghamshire countryside, Latimer House, a grand country estate, stands proudly - a witness to some of greatest secrets of WW2.

It's 1942, and World War Two is in full swing. Roberta 'Bobby' Hollis has joined the Air Transport Auxiliary in a team of pilots known as the 'glamour girls'. Just as capable as the men, these women ferry aircraft, parts and people between factories, assembly plants and airfields. 

Hull, 1940. Widowed Edie Copeland has just arrived on Exchange Street, heavily pregnant and with heavy suitcase in tow. She left York after tragedy struck to make a fresh start, but she's a stranger to this street, and her new landlord doesn't hesitate to remind her of this, widow or not. Luckily, the neighbours are a little more welcoming and Edie is soon made to feel at home by the Maguires and the Scuttles. As air raids sound and the war feels closer than ever, the community has to stick together. But Edie is hiding something, and she doesn't know how much longer her secret is safe.

September 1939. London is in blackout; war has been declared, but Dulcie Treadwell can think only of her heartbreak over American broadcaster, Glenn Reeves, who didn’t say goodbye before leaving for Berlin. Posted to Bletchley Park, Dulcie must concentrate on helping the war effort by cracking the German Enigma codes. The hours are long and the conditions tough, with little recognition from above. Until she breaks her first code. Dulcie finally settles into something she was born to do. But just as she’s proving her worth, a shocking betrayal leads to Dulcie’s brutal dismissal.

When her husband doesn’t come home one day, Ariella realizes that the only way she can ensure her Jewish children’s safety is to avail of the Kindertransport, but can she bear to let them go? A thousand miles away, Elizabeth Klein has closed herself off from the world. Losing her husband on the last day of the Great War and her child months later, she cannot, will not, love again. It hurts too much. But she is all Liesl and Erich Bannon have.

Cambridgeshire - March 1939. As the clouds of war begin to gather in Europe, the Talbot family of rural Blackberry Farm will be torn apart, just as so many families all over the world will be. Life will never be the same again. Whilst in London, the Salmons family will feel the pain of parting and loss. Brought together by war, the two families become intertwined and, as the outlook looks bleak, they must draw on each other’s strength to fight through the hard times.

New York City, 1922. Harp Devereaux is torn. Part of her desperately wants to return to Ireland to finish what she and her family and friends started and to witness the departure of the British forces from Ireland after eight hundred long years. But the other part finds life in America during the Roaring Twenties too exciting to trade for the sleepy streets of County Cork. She and John Joe are united and determined to sample all that life after the Great War has to offer, but life Stateside is not as free and easy as Harp first imagines.