Forced to leave their family home in London after it is bombed, Maddie and her two daughters take refuge at Knyghton, the beautiful country house in Norfolk where Maddie’s husband, Philip, spent the summers of his childhood. But Philip is gone, believed to have been killed in action in northern France. Despite overwhelming evidence to the contrary, Maddie refuses to give up hope that she and Philip will some day be reunited. Arriving at Knyghton, Maddie feels closer to her missing husband, but she soon realises that there’s a reason Philip has never spoken to her about his past.

It’s the hottest day of the 1976 heatwave and there’s not a breath of fresh air in the labour ward at Lincoln County Hospital. Michelle is having her fourth child, a girl, while beloved husband Dean is sipping a cold pint in the pub. Their little house is already bursting at the seams, but Michelle is sure they’ll find a way to stretch their budget and continue life as a blissfully chaotic happy family. They name their new baby Donna.

Posy Montague is approaching her 70th birthday. Still living in her beautiful family home, Admiral House, set in the glorious Suffolk countryside where she spent her own idyllic childhood catching butterflies with her beloved father, and raised her own children, Posy knows she must make an agonising decision. The house is crumbling around her, and Posy knows the time has come to sell it. Then a face appears from the past - Freddie, her first love, who abandoned her and left her heartbroken 50 years ago. 

Minnie is supposed to find a nice man, get married and have children. The problem is it doesn’t appeal to her at all. She is working as a secretary but longs to make a difference. Then, one day, she gets her chance. She is recruited by the British government as a spy. Under strict instructions not to tell anyone, not even her family, she moves to London and begins her mission - to infiltrate the Communist movement.

September 1939, troubled young Imogen Lockhart travels to Cornwall by train to deliver two small boys to their prep school, which has been evacuated to Silverwood House for the duration of the war. When she’s asked to stay on at the school as temporary cover for the usual matron she readily agrees. After all, it enables her to put off more serious decisions of what to do with her life. But her time at the school turns out to be more complicated than she’d imagined.