It's 1940 and the German Luftwaffe have started their nightly reign of death and destruction over London's East End. The Brogan family is braced and ready to take on Hitler single-handed, if need be, but with rationing, air-raids and the threat of Nazi invasion hanging over this doughty family, their spirits are taking a bit of a battering... For Jo, the youngest of the Brogan sisters and newly qualified as an ambulance driver, the freedom of her job also offers the chance to see the love of her life, Tommy Sweete, more often. But Tommy's dangerous reputation means he's disapproved of by her family, and any chance of happiness seems very far away. As the Blitz devastates their homes and neighbourhood, can their love survive the horrors of war-time London?