Having done her duty as an ATS girl, Lance Corporal Ruth Cox is moving on to new challenges and has signed up to work as a gunner girl, helping to keep the skies clear of enemy planes and safe for our brave boys in blue. But on the way to her new barracks, Ruth meets handsome Sargeant Sam Johnson. Ruth isn’t looking for romance, and she knows she has a dangerous job ahead, but there is a connection between her and Sam that she can’t deny. Sam has never met anyone quite like Ruth before and he hopes their relationship will continue to grow, but with the war still raging, the time is fleeting.

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....

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.

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.