When Grace, April, and Poppy join the US Army Nurse Corps, they see it as little more than an adventure, one made all the better by their first station: Pearl Harbor, Hawaii. Joined at the hip, idealistic Grace, exuberant Poppy, and brave but haunted April frolic in the sun, attending parties, flirting with the handsome soldiers, and becoming fast friends with seasoned nurse Eva. Like the Hawaiian sun, their future seems warm and bright - until the infamous morning of December 7.

It is 1939, and working-class Evie Bishop has received a scholarship to study mathematics at Oxford when tragedy turns her life upside down. Evie must seek a new future for herself and, inspired to contribute to the war effort, joins the Women’s Auxiliary Air Force as an Ops Room plotter. Posted to a fighter station on the Sussex Coast, Evie befriends two other WAAFs. But the German bombers seem to know more than they should about the base’s operations, and soon Evie, May and Jess are caught up in a world more dangerous than they ever imagined. 

London, 1944. Two young nurses meet at a train station with a common purpose: to join the war effort. Scarlet longs for the chance to find her missing fiancé, Thomas, and to prove to her family - and to herself - that she's stronger than everybody thinks. Nursing is in Ellie's blood, but her humble background is vastly different from Scarlet's privileged upbringing. Though Ellie puts on a brave face, she's just as nervous as Scarlet about what awaits them in France.

When Hazel is given the chance to parachute into Nazi-occupied France, she seizes the opportunity to do more for the British war effort than file paperwork. Alongside her childhood friend, French-born Rose, she quickly rises up the ranks of the freedom fighters. For Rose, the Resistance is a link to her late husband, and a way to move forward without him. What starts out as helping downed airmen becomes a bigger cause when they meet Sophia, a German escapee and fierce critic of Hitler who is wanted by the Gestapo.

Sunderland, 1940, and the women go to the shipyards to do their bit for the war effort. Polly never dreamed she would be able to work in the shipyards like the men in her family but times are tough and her new job ends up giving her more than she ever expected when she meets enigmatic dock diver Tommy Watts. During the day, head welder Rosie teaches her fledgling flock of trainees their new trade, but at night she hides a secret life. And mother hen Gloria signs up to escape her brutal husband, but finds she cannot run....

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.

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.

During World War Two, Churchill declared that 'beauty was duty'. But for the women working at the Yardley cosmetics factory in London's East End, it's friendship and family. Nineteen-year-old Lily Gunn runs the conveyor belt in the factory's Lipstick Room with tight reins, though of all the women working there it's her 16-year-old sister who gives her the most trouble. Especially when Rene's new boyfriend Ronnie gets called up to fight, leaving Rene alone and with a big problem.... 

Mary Vale, a grand and imposing Mother and Baby Home, sits on the remote Fylde coast in Lancashire. Its doors are open to unmarried women who come to hide their condition and find sanctuary. Women from all walks of life pass through Mary Vale, from beautiful waitress Emily, whose boyfriend has vanished without trace, to young Isla, cast out by her wealthy family after her first year at university goes horribly wrong. Awaiting them is Nurse Ada and Sister Anne who work tirelessly to aid the mothers and safely deliver the babies. 

Newly married to dashing RAF officer Tom, Irene Farley leaves behind her safe countryside life to move in with his family by the docks in South Shields. Little prepares her for the devastation the Jerry bombers have wreaked on the Sixteen Streets or that they would be living under her mother-in-law's roof, alongside Tom's three brothers and two wives!

It's 1941 and Britain is at war. For the aristocratic Walsingham family this means their grand home being taken over by the armed forces. But for newcomers Ava, Maudie and Bella, this is a chance for something more. Each is ready to do their part for the war effort and soon become firm friends. But Lord Edward Walsingham seems like he is hiding something. And although he may be clever, he might have met his match in Maudie and the girls....

1944: Fiona Denning has her entire future planned out. She’ll work in city hall, marry her fiancé when he returns from the war, and settle down in the Boston suburbs. But when her fiancé is reported missing after being shot down in Germany, Fiona’s long-held plans are shattered. Determined to learn her fiancé’s fate, Fiona leaves Boston to volunteer overseas as a Red Cross Clubmobile girl, recruiting her two best friends to come along. There’s the outspoken Viviana, who is more than happy to quit her secretarial job for a taste of adventure.

Two very different girls from this tight-knit community join up as ARP Wardens to do their bit for the home front. Violet Simms lives with her controlling, widowed mother who runs the local pawn shop. At just 20-years-old, Violet longs for friendship, love and escape. It seems her dreams might come true until tragedy strikes on one of the very worst nights of the Birmingham Blitz. Grace Templeton is the eldest in her family of 10 children. Spirited Grace is determined never to become burdened by child bearing and drudgery like her mother. 

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.

 1936. Polly's guardian angel has to work overtime when her large family is forced to move from the countryside they love into central Liverpool. Money is desperately short, and with her mother working and her father sick, Polly is easily led astray by the handsome Sunny Andersen. But soon war looms, and Sunny joins the navy to train as a signaller. After the horrors of the May Blitz, Polly, too, decides she wants to help her country and goes into the WRNs. She hears that an old pal, Tad Donoghue from the Dublin slums, is now in the Royal Air Force.