It is 1916 and Edith Mellor is one of the few female surgeons in Britain. She travels to the Somme, where she is confronted with the horrors at the front. Yet amongst the bloodshed on the battlefield, there is a ray of light in the form of the working class Albert, a corporal from the East End of London. Meanwhile in Bradford, strong-minded Ada is left heartbroken when her only remaining son Jimmy heads off to fight in the war. She then discovers that her mentally unstable sister Beryl is pregnant with her husband Paddy's child. Can Edith help her to turn her life around?
War pulled them apart, but can it bring them back together? Molly lives with her repugnant father, who has betrayed her many times. From a young age, living on the streets of London's East End, she has seen the harsh realities of life. When she's kidnapped by a gang and forced into their underworld, her future seems bleak. Flo spent her early years in an orphanage and is about to turn her hand to teacher training. When a kindly teacher at her school approaches her about a job at Bletchley Park, it could turn out to be everything she never realized she wanted.Will the girls' friendship be enough to weather the hard times ahead?
Alice, an upper-class Londoner, is recruited into the Special Operations Executive and sent to Paris where she meets Gertrude, an ex-prostitute working for the Resistance Movement. Together they discover that they have a connection to the same man, Ralph D'Olivier, and vow to unravel the mystery of his death.