Suffolk, 1939: Julia Compton has a beautifully well-ordered life. Once a promising musician, she now has a handsome husband who pays the bills, a young son she adores and a housekeeper who takes care of her comfortable home.
Then, on the eve of war, something unexpected happens. She falls in love.
Cut off from family and friends, Julia loses everything. Penniless and denied access to her son, she is cast adrift in wartime London with her bohemian filmmaker lover, Dougie. As invasion looms and the bombs rain down, her struggle is only beginning. Before long, ruined and broken, she faces a choice - succumb to her fate or fight to forge a new identity in the heat of war.