England, 1943: Home is no longer safe for eight-year-old twins Molly and Jacob. Night after night, wailing bombs and screeching planes skim the rooftops overhead. They cradle each other, shivering in terror, not knowing if they'll live to see dawn. Their mother, Martha, has no choice but to evacuate them to the safety of the countryside. At the train station, Martha bites back tears as she says good-bye to her precious children. Knowing she might never see them again, she gives Jacob a letter, pressing the envelope into his hands and telling him to only read it if they are in danger.

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. 

The new Anna Jacobs saga continues the story of the younger sisters of Keara Michaels, the heroine of A Pennyworth of Sunshine, following their fortunes from 19th-century Ireland to the brave new world of Australia. In 1863 the authorities send Irish orphans Ismay and Mara to Australia against their will. Just when they thought it couldn't get any worse, on arrival they're separated from one another. While Ismay is forced to take a job as a maid miles away in the country, Mara must stay in the care of the Catholic mission.

Keara Michaels doesn't want to leave her family in Ireland, but fate sends her first to Lancashire, then across the sea to Australia, pregnant and penniless. And Theo Mullane, the man who loves her, is married, with an ailing baby son, so cannot follow her as he longs to. Mark Gibson leaves Lancashire to avoid marriage. But gold prospecting is a dangerous pursuit, and when his gentle young wife dies in childbirth, his father-in-law kidnaps the baby. So Mark runs away again, this time to Western Australia, where he employs Keara in his country inn.

It is two years since Harpers opened in Oxford Street and Ben is planning to expand the premises. Life is good for Sally and Ben as they look forward to their first child and hope for a prosperous future. Beth is settling into married life with Jack, gradually recovering from her aunt’s tragic death, though still unable to conceive a child. New girls have joined Harpers and Marion, Janice and Becky all become a part of the daily life at the busy store. Rachel is undecided whether to marry a man she isn’t sure she can trust, while Minnie meets an old love.

One wild night in the 1930s, midwife Patty Peel is called to attend a birth on the opposite side of Liverpool. She pedals off into the storm and delivers a baby girl in a filthy slum dwelling, just as the mother dies. The drunk and violent father tells Patty to get rid of it so she takes the child away, meaning to deliver it to the nearest orphanage. However, Patty spent her entire childhood in an institution, except for the frequent occasions when she ran away, and cannot bear to hand the baby over. 

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....

In 1858 Annie Hallam has at last found complete happiness. She has three healthy babies and adores her husband, Frederick. After years of struggling to make a living in the small Lancashire town of Bilsden, Annie knows she deserves to sit back and enjoy her life - after all, she's not yet 40, and still in her prime.   

Eleanor and Beatrice dream of lovematches but the Dowager insists romantic love is for housemaids, not for the Graceover women. Beatrice, despatched to London to look over the current crop of bachelors, is unimpressed by the frivolities of the Season. Disturbed by the languid charm of Lord Serle and appalled by the mercenary attitudes to marriage displayed by Society, Beatrice’s country innocence and unconventional behaviour lead her into some alarming situations.

It’s February 1942, and as the Americans finally join Britain and her allies, 23-year-old Francesca Fabrino is doing her bit for the war effort in a factory in East London. But her thoughts are constantly occupied by recently married Charlie Brogan, who is fighting in North Africa with the Eighth Army. When Francesca starts a new job for the BBC Overseas department, she meets handsome Count Leo D’Angelo and begins to put her hopeless love for Charlie aside.