Away from the frontlines of World War II, in towns and villages across Great Britain, ordinary women were playing a vital role in their country's war effort. As members of the Women's Institute, an organization with a presence in a third of Britain's villages, they ran canteens and knitted garments for troops, collected tons of rosehips and other herbs to replace medicines that couldn't be imported, and advised the government on issues ranging from evacuee housing to children's health to postwar reconstruction. But they are best known for making jam.

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.

Lady Joanna Harcourt and her daughter, Sarah, discover their life of luxury at Goodwill House is over. Because with Lord Harcourt away fighting, the Harcourt girls are facing financial ruin. Lady Joanna is terrified of losing their home, but for Sarah, this means her dreams of becoming a doctor are over. Headstrong Sarah isn’t one to quit! War or not, she’s determined to find a way to save her home and follow her dreams - whatever it takes.

1941. The Blitz rages over London. And even in Cornwall, the war is being fought. When Violet loses her sister in the Blitz, she must take her nieces to safety in Cornwall. On the coast, she meets carefree chorus girl Eva, who is also running from the dangers of London. But Porthcurno hides a secret military base, and soon Violet and Eva realise there’s a battle to fight in Cornwall, too. Together with local Hazel, who works on the base, they must come together to help the war effort. But will their friendship be enough to keep them safe?

In February, 1922, at the western-most entrance to Victoria Station in Manchester, a massive plaque was unveiled. Beneath a vast tiled map showing the lines of the Lancashire and Yorkshire Railway network, a series of seven bronze panels recorded the names of the men of the Lancashire and Yorkshire Railway who gave their lives for King and Country in the Great War - a total of 1,460 names. In March, 1940, a group of women of varying ages and backgrounds stands in front of the memorial, ready to do its bit in this new World War....

Scotland, 1942. The Lumberjills, the newest recruits in the Women’s Timber Corps, arrive in the Scottish Highlands to a hostile reception from doubtful locals. The young women are determined to prove them wrong and serve their country – but they’re also all looking for something more. Can the Lumberjills get through their struggles together – even when tragedy strikes?

The world is on the brink of war when Elizabeth Mowbray breaks her engagement with a tea planter in India and returns home to the English countryside. Desperate to escape a stifling life under her parents’ roof, she moves to London seeking adventure and excitement.

When sixteen-year-old Sally is evacuated to the English south coast, she is terrified by what lies ahead of her. All she knows are the sights and sounds of London's East End – but Sally swallows her tears as they leave the familiar landmarks behind, knowing that she has to be a Grown-Up Girl and play mother to her six-year-old brother Ernie. Playing mother is nothing new for Sally – their real mother Florrie, a good-time girl, hasn't even come to the station to wave them off and Ernie, crippled at an early age by polio, is used to depending on his older sister.

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 Maggie’s new job takes her from bombed-out London to grand Snowden Hall in the Cotswolds, she’s apprehensive but determined to do her bit for the war effort. She’s also keeping a secret, one she knows would turn opinion against her. Her mother is German: Maggie is related to the enemy. Then her evacuee sister sends her a worrying letter, missing the code they agreed Violet would use to confirm everything was well, and Maggie’s heart sinks.

1901. When the Earl of Stainton dies in a tragic hunting accident, Giles, the eldest son of the noble Tallant family, must step forward to replace him as the head of the family. But Giles has avoided the Castle and his stifling relatives for years, deciding instead to forge his own path away from the spotlight. Now, he must put aside his ambitions and honour his duty to the family.

England 1922. It’s been four years since Rudy’s brother Edgar went missing in war-torn France. Still deep in mourning and grappling with unanswered questions, Rudy and his mother struggle to move on. When the enigmatic Mariette arrives unexpectedly at the family’s manor claiming to be Edgar’s widow, and the mother of his child, Rudy urges her to stay, hoping she’ll shed light on the missing pieces.

Germany, 1926. When Richard and Paula meet in bustling, cosmopolitan Hamburg, everything feels possible. They fall in love, marry and are soon blessed with twins. When Richard qualifies as a psychiatrist, life ahead looks bright. Their only sadness is that their son, Georg, was born deaf, although with his family to protect him they’re sure he’ll be okay. But happiness turns to horror when the Nazis seize power and begin forcing doctors to euthanise anyone the regime deems imperfect. Suddenly, Richard is falsifying medical records to save his patients - and hiding Georg.

Eleanor Hamilton is happily married and mother to a beautiful four-year-old girl, Mabel. Her husband, Edward, is a leading light in the burgeoning Eugenics movement, which is designing the very ideas that will soon be embraced by Hitler. But when Mabel develops debilitating epileptic seizures and Eleanor discovers Edward has been keeping secrets, Eleanor's world fractures. In order to save her daughter, she takes matters into her own hands.

When young English nurse Sibyl Lake is recruited as a spy to support the French resistance, she doesn’t realize the ultimate price she will end up paying. She arrives in Colmar, a French town surrounded by vineyards and swarming with German soldiers. Her fear is dampened by the joy of being reunited with her childhood sweetheart Jacques. Sibyl’s arrival has not gone unnoticed by Commander Wolfgang von Haagan. She realizes that letting him get closer is her best chance of learning enemy secrets. Yet despite her best intentions, Sibyl finds that betrayal does not come easy to her.