When Betty Palmer's sister dies under suspicious circumstances whilst landing her Tiger Moth, Betty and three other women pilots of the Air Transport Auxiliary in WWII England unite to discover who killed her and why. Estranged from her family, Penny Blake wants simply to belong. American Doris Winter, running from a personal tragedy, yearns for a new start. Naturally shy Mary Whitworth-Baines struggles to fit in. Together, though, they are a force to be reckoned with as they face the mystery that confronts them.

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?

Pearl has given up on her dreams of being a journalist after being denied a promotion because of her gender. Joining the WAAF as a radio telephone operator for Bomber Command, Pearl's new job at RAF Fenthorpe serves two purposes – providing an income for her grandmother, and keeping a close eye on her younger sister, Thea, an instrument repairer at another Lincolnshire bomber station.

When duty calls, East End girl Minnie Wolton isn’t afraid to do her bit. She’s excited to be joining the ATS girls and although she knows life at the barracks will be tough, she’s not one to quit! She just hopes the other girls are all good sorts. With her husband away fighting, Eileen Ruffel is glad of the break from her unhappy marriage. She just wants to make a success of the ATS girls and maybe find happiness too. Along with the other girls, Minnie and Eileen strike up a firm friendship. The training is hard, but they are determined to prove they are the best new recruits.

All is not well at Castle's Café. Since the fatal shooting, customers have been staying away, and now Nellie finds herself in debt to the sinister Terence Carter. But when a deadly attack strikes close to home, these troubles pale into insignificance. Meanwhile, Jimmy Castle's relationship with family friend Reenie Turner has deepened, and in the aftermath of the attack that could so easily have killed them, they decide to get married. But the return of an old friend threatens to expose a long-held secret, leaving the wedding teetering on the brink of disaster.

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.

Left homeless after the Exeter Blitz, May must find a job if she's to put a roof over her head and help support her two younger sisters. Taking a job as housekeeper to farmer George, May soon ends up getting stuck into more than just cleaning and cooking. The Ministry of Agriculture will close Fair Maids Farm if it doesn't meet their produce targets, but George refuses to heed their warnings. With only two reluctant Land Girls to help, May receives unexpected guidance from Dan, a neighbouring farmer, whose kindness gets tongues wagging in the village.

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.

England, 1941. Reunited briefly with her husband-to-be before he returns to fighting, Lily Baker now finds her mundane army office work dreary. But when her boss asks her to keep watch on the happenings at the depot, she quickly suspects a new weapons supplier of fraud. As she trains her sharp eye on the potential cheat, she agrees to help an unmarried colleague with an unexpected pregnancy. But when, without evidence, she is accused of being the one with child, she faces hard decisions.

After Pearl's home is destroyed in the Exeter Blitz, so too are her dreams of performing onstage. Finding work as a bus conductress instead, a chance encounter revives her hopes once more, and soon she is singing for the troops alongside new friend Ivy. When agent Gordon Gold approaches them, Ivy jumps to sign with him and sets off for the bright lights of London. But Pearl is wary of the charming man and decides to stay, watching her friend go with a heavy heart. A year later, while Pearl is struck mute by an illness, Ivy returns - and is quick to seize the chance to fill Pearl's place.

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? 

England, 1940. Opening the box with trembling hands, she couldn’t believe it–a tiny baby lay inside. She gently lifted the newborn as it started to cry. Cradling the little one to her chest, she searched the darkness for any sign of whoever left it here. And as she rocked the child, something fluttered to the ground...a ration book.

October 1940. When VAD nurse Evie narrowly escapes being killed in an air raid during the London Blitz, it propels her to make a life-changing decision to break free of her troubled and unhappy life. She escapes to the Norfolk countryside to start afresh, with a job at the newly opened Great Plumstead Hall hospital, and a wonderful new home at Rookery House. The community of Great Plumstead welcomes evacuees to the village—mothers and children bombed out of their London homes. Sisters Prue and Thea, along with members of The Mother's Day Club, help the new arrivals settle in.

1940, London. When Cordelia accepts the post of head librarian in Silver Town Library, her mother is more than a little disapproving. The East End has high levels of poverty and illiteracy, and her mother says it’s no place for a woman of her status. But Cordelia is determined to make a difference in these times of strife, and along with her colleagues, Jane and Mavis, she begins to help the local community, making sure everyone knows what the library can offer them. And maybe even a romance will blossom.

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.