It is June 1940, and as the bombs fall the women at home must dig deep. Tucked on the edge of the Lake District lies Mary Vale, a Mother and Baby Home open to unmarried women and their children. But tensions arise when three very different women walk through the doors.

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.

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. 

Plymouth, 1941. As sirens blare all around, the Shawbrook family take refuge in a packed shelter. Bombs have already begun to fall through the night sky when they realise their infant son, Freddie, has been forgotten in the rush, left to sleep in his crib. Terrified, Vera, his young mother, races to find him and bring him to safety. The next morning, air raid warden David Shawbrook returns from his watch to find the shelter pulverised, and his family seemingly all dead. Dirty footprints inside their home betray the looters who have rifled through the house.

The life of a Bomb Girl isn't usually glamourous. But Maggie is getting married, so she is going to make sure her wedding day is - even if she does have to spend every other day slaving on the factory floor. This blasted factory was not what Julia had in mind either. She had always dreamed of attending Oxford University rather than getting her hands dirty, and the easy laughter of the other women intimidates her terribly. But they are all here together in this munitions factory in a Lancashire mill town, sharing firsts, pitching in and getting on. These Bomb Girls are going to do their best at work and in love.

August 1941: As war sweeps across Britain and millions of men enlist, women must fight the battle on the home front. Fran always thought she would marry her childhood sweetheart and live in Massingham, the beloved pit village she has always called home. But the opening of a munitions factory in the north-east of England presents a new opportunity. Against her father's wishes and with best friends Sarah and Beth by her side, Fran signs up to join the ranks of women at the factory. It's dangerous work, but the friends discover that their lives are only just beginning. 

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....

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.

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.

Bridget Milligan has donned a uniform and joined the nursing services where she becomes intrigued with the miracles of modern medicine. She’s also torn between family loyalty, her new career and Lyndon O’Neill, the love of her life. Is it too impossible to hope that everything will come out right in the end? Phyllis Harvey is still serving in Malta where she sees the casualties of war first hand. Finally it seems like Phyllis is blessed with true in love, but fate can sometimes be a rocky road and nothing is that certain.

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.

The Sweet family have run the local bakery for as long as anyone can remember. Twins Ruby and Mary Sweet help their widowed father out when they can. Mary loves baking and has no intention of leaving their small Gloucestershire village while Ruby dreams of life in London. But as war threatens, there will be changes for all of the Sweet family, with brother Charlie off to serve and cousin Frances facing evacuation. But there will be opportunities, too, as the twins' baking talent catches the attention of the Ministry of Food.

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.

Life for Elsie is difficult as she struggles to cope with her alcoholic mother. Caring for her siblings and working long hours at Swift's jam factory in London’s Bermondsey is exhausting. Thankfully her lifelong friendship with Dot helps to smooth over life’s rough edges. When Elsie and Dot meet Millie Swift, they are nervous to be in the presence of the bosses’ daughter. Over time, they are surprised to feel so drawn to her, but should two East End girls be socialising in such circles?

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....