1936. Polly's guardian angel has to work overtime when her large family is forced to move from the countryside they love into central Liverpool. Money is desperately short, and with her mother working and her father sick, Polly is easily led astray by the handsome Sunny Andersen. But soon war looms, and Sunny joins the navy to train as a signaller. After the horrors of the May Blitz, Polly, too, decides she wants to help her country and goes into the WRNs. She hears that an old pal, Tad Donoghue from the Dublin slums, is now in the Royal Air Force.

When war broke out, 17-year-old Christie could have stayed down on the family farm in Norfolk, where she was wanted and needed. So why had she joined up? Come to that, why had Meg from Cheshire, and Sue, very much the big city girl from Liverpool, and Shanna, the life-toughened product of a broken home in Glasgow? Mixed reasons. Very mixed backgrounds. But no time to think now. Not with the sergeant shouting and the station air-raid siren beginning to wail.... 

August 1940: As the Luftwaffe swarm over Liverpool, Shane Quinn decides to move his family back to the safety of Ireland. But his only child, the beautiful Dana, would rather stay and serve her country than flee to a foreign land. Determined to make it on her own, she joins the WAAF with newfound pals Patty and Lucy. There’s plenty of excitement to be had on a RAF station, even a chance or two at love.

It wasn't a privileged childhood, but it was a happy one. Sybil and Lizzie Cream, brought up in a fisherman's cottage on the edge of the cold North Sea, were content to leave privilege where it belonged: with their friends the Wintertons. Christina Winterton was the same age as Sybil, and the two girls were inseparable, but it was Lizzie whom Ralph Winterton, three years older, found irresistible. Then war came to East Anglia, and so did Manchester-born Fenn Kitzmann, now of the American Army Air Force.

Liverpool, 1935. Kathy Kelling is coming home to Daisy Street from her first day at the High School, longing to tell her friend, Jane, all about it. The Kellings' life becomes a struggle when Kathy’s brother, Billy, has a serious accident. He needs constant attention, and Mrs Kelling must take in lodgers so that Kathy’s schooling does not suffer. When war breaks out, Kathy and Jane are forced to grow up fast. Kathy meets the handsome Alec Hewitt, but he is more attracted to blonde, bubbly Jane. But Fate has not yet finished with Kathy Kelling.... 

Dympna Byrne lives a simple life with her family on the Connemara coast. She adores her father Micheál, and does her best to help her family by working hard and expecting little. But beneath the surface there are hidden secrets. Dympna’s mother idolises her clever eldest son, yet her attitude to Dympna is puzzling. So when her family find themselves in desperate need of money, it is Dympna who crosses the water to Liverpool to seek a better life. 

It is a cold December night and Sylvie Dugdale is weeping as she walks by the Mersey. She fails to notice an approaching figure, and jumping to one side to avoid collision, she finds herself struggling in the ice-cold river. Constable Brendan O'Hara, just coming off duty, sees the girl's plight and dives in to rescue her. He is dazzled by her beauty but discovers that Sylvie's husband is in prison, and the closeness that Brendan soon longs for is impossible. But he is able to help her escape from Liverpool....

Liverpool, 1917. When Irish seaman Michael Gallagher docks in Liverpool after years of fighting with the British Navy, he never expects to fall in love. But the moment he glimpses Stella Bennett, all thoughts of returning to his homeland vanish. Determined to be together, the young couple defy Stella’s parents’ wishes. But their plans to marry are soon derailed by the arrival of baby Ginny. Her crop of fiery red hair plants a seed of doubt in her father’s mind, and it’s not long before their world begins to fall apart.

Lavender Road boasts a pawnbroker, a pub, two rows of terraced working class homes and, at one end, the big house owned by the local brewer. When war breaks out, the lives and fortunes of the families who live in Lavender Road are changed out of all recognition. For Joyce, it means a struggle to keep food on the family table; for Jen it may mean the end of her dream to become an actress; and for Pam, there is the sickening seesaw of emotions as she fights attraction to her handsome lodger and a growing distance from a husband who is judged not fit to enlist.

When the Todds move into a flat on the Scotland Road, they are strangers to city life: their previous home was a canal barge. Harry gets a job as warehouse manager and his wife, Martha, works in a grocer’s shop whilst Seraphina trains as a teacher, Angela works in Bunney’s Department Store and young Evie starts at regular school. Then circumstances change, and Seraphina takes a job in Lyon’s Corner House. Customers vie for her favours, including an old friend, Toby.... 

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. 

Emmy Dickens lives with her widowed mother in a neat house in neglected Nightingale Court, but Mrs Dickens has always impressed upon her daughter that her main aim in life must be to escape from the court. Emmy sees that marriage is her best way out, and when Peter Wesley, First Officer aboard a cruise ship, asks her to marry him, she is over the moon. Life goes well for the newlyweds; they set up home and start a family. But when Peter is killed and Emmy is left almost penniless, her problems begin.... 

Liverpool, 1939: 16-year-old Lizzy Atherton is forced to flee her violent stepfather in the middle of the night and finds herself stranded on a station platform completely alone. Desperate to know what has become of her beloved mother, who she had no choice but to leave behind, Lizzy returns the next day only to find her home deserted. Devastated, Lizzy joins forces with her old school friend Dolly and Clara, an escaped evacuee, and vows to find her mother whatever it takes. 

Rose McAllister is waiting for her husband, Steve, to come home. He is a seaman, often drunk and violent. Rose does her best to cope and sees that her daughters, Daisy and Petal, suffer as little as possible. Sensing that war is on the horizon, Steve tries to reform, but on his last night home, he pawns the girls' new dolls to go on a drinking binge. When war is declared, Rose finds a good job but agrees the children must be evacuated. War brings hardship and difficulty for the girls and Rose as they face the destruction of their home and cruelty at the hands of others....  

It is 1900, and Adeline Warburton and Arnold Haslington have fallen deeply in love. But though both are from wealthy families, their social status is too far apart for their families to approve of the match. And when Arnold marries another, Adeline’s reaction is immediate and altogether unexpected, as she travels to make a new life in China. But although they are separated by thousands of miles, the consequences of their youthful passion continue to haunt them and their children - Addy’s daughter, Nala, and Arnold’s son, Philip. As the years pass and the children grow, violent forces are set to bring them together, unaware of the secrets from the past that bind them.