When sixteen-year-old Sally is evacuated to the English south coast, she is terrified by what lies ahead of her. All she knows are the sights and sounds of London's East End – but Sally swallows her tears as they leave the familiar landmarks behind, knowing that she has to be a Grown-Up Girl and play mother to her six-year-old brother Ernie. Playing mother is nothing new for Sally – their real mother Florrie, a good-time girl, hasn't even come to the station to wave them off and Ernie, crippled at an early age by polio, is used to depending on his older sister.

Cliffehaven, 1946. The war is over and those who have spent years fighting behind enemy lines are finally coming home. Peggy Reilly is over the moon that her husband Jim is safely back from Burma. But after the horrors he has endured, adjusting to life at Beach View will not be easy. Can he and Peggy find a way through? Meanwhile evacuee Ruby Clark has much to contend with when her estranged mother turns up, having completed a long prison sentence. There is huge heartache still to come for Ruby, and she will need her Beach View family more than ever.

Cliffehaven, December 1946. From a hill above the town of Cliffehaven, a young woman makes a heart-breaking choice that will change the course of her life forever. Hours later, a baby is found in the Nativity crib of the local church. Who could have left him there, and why? The mystery preoccupies everyone in Cliffehaven - not least Peggy Reilly, who has enough to contend with at Beach View Boarding House without this extra secret to unravel.

Bristol 1939. At forty years of age, Mary Anne Randall still turns heads. With an abusive husband spending most of his wages on beer, she has resigned herself to be the sole breadwinner to protect her family and keep the wolves from the door. In order to make ends meet, Mary Anne runs a pawnbroking business from the wash house at the end of the garden. Following the outbreak of war an opportunity presents itself to escape her loveless marriage and find true love. Will she take that chance, or carry on living just for her children and not for herself?

Bristol, 1939. School leaver Maisie Miles suspects her father, a small-time crook, has an ulterior motive for insisting she gets a job at the W. D. & H. O. Wills tobacco factory but keeps it to herself. She's befriended by effervescent Phyllis Mason and kind-hearted Bridget Milligan who take pity on her and take Maisie under their wing. But beneath their happy-go-lucky exteriors, they all harbour dreams and worries about what the future holds. 

Kelsey Byden always believed that her mother was dead. But now, after all this time, she has discovered the truth: Naomi Chadwick is still alive - after spending years in prison for the murder of her lover. Now, at Naomi’s Virginia horse farm, Kelsey is trying to sort out a lifetime of deception - and her feelings about her mother. The bonds of love can be fragile...as Kelsey learned from her recently ended marriage.

Dilly is devastated: with her husband unable to work and four children already at home, they cannot afford to feed their newborn baby. Heartbroken, she delivers her baby girl to the Farthing family, who have just lost their own daughter to measles. This act of desperation will change the lives of both families irrevocably. But when the chance for true love finally comes, will Dilly choose family over her own happiness?

Jessie Burton is lively and intelligent - she wants more than the respectable life in service her mother has planned for her. Times are changing; railways are being built across the land, bringing new freedom and possibilities. Jessie tastes that freedom when she meets an ambitious young navvy, newly arrived in Yorkshire. The attraction between them is overwhelming. And Jared Wilde is determined to make Jessie his wife. 

1850. When Opal Sharp finds herself and her younger siblings suddenly orphaned and destitute, she thinks things can get no worse. But soon three of them - including Opal - are struck down with the illness that took their father from them, and her brother Charlie is forced to make an impossible decision. Unable to afford a doctor, he knows the younger children will not survive. So, unbeknownst to Opal, Charlie takes their younger siblings to the workhouse, where he knows they will at least be fed and have a roof over their heads. Opal is heartbroken and struggles to forgive him. 

Liverpool, 1939. Bella Rogers thought her life was just starting; she can’t wait to get married to her childhood sweetheart, Bobby. But when war is declared and Bobby is called up, his letters stop, leaving Bella heartbroken and alone. Then her family is torn apart by tragedy when her angelic 5-year-old sister dies from a terrible illness. They can barely afford a funeral, but the church is packed with the entire community, devastated for their loss. Grieving for her sister and lost love, Bella finds a job at the Bryant and May factory, making matches.