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.

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....

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.

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.

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.