Liverpool, 1868. Shrouded in secrecy, Alice Sampson gives birth to a beautiful baby girl. But the former nurse's happiness is blighted by the knowledge that as a penniless, unwed mother, her future, and that of her child, can only be one of shame and disgrace. Then a knock at the door brings a miracle: she is invited to return to the Liverpool Royal Infirmary and her beloved ward. With the help of her friends and the welcome attentions of Reverend Seed, the hospital Chaplain, Alice slowly starts to rebuild her life. 

Liverpool, 1855. Ada Houston is alone. Her grandfather has recently passed away, and her brother is missing, last seen working on the Liverpool docks. Everyone assumes him to be dead. But she will not give up hope. Ada's determined search takes her to the Crimea, where she joins the team of Florence Nightingale's nurses. She may have set off looking for her brother, but along the way Ada finds friends, romance and a new purpose in her own life in the most troubling and difficult of places.

Maggie and her new friends Annie, Irene and Sarah come from very different backgrounds, but they've got one thing in common: they've all signed up for the Women's Police Volunteers. They can't wait to show the men just what they're made of. But soon, Maggie realises she's in over her head. Hiding her involvement with the WPV from her tyrannous father is becoming ever more difficult, and when she bumps into an old acquaintance with a big chip on his shoulder, the dangers of her new life become all too clear....

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....

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.