As London goes up in flames during the Blitz, two sisters from Bermondsey find their lives changed out of all recognition… When a bombing raid destroys nearly everything she holds dear, May joins the ATS and becomes a gunner girl. Peggy, May's elder sister, is trapped in a stifling marriage yet amid the chaos of war, a route to freedom beckons. From war will come hardship and tragedy, as well as new, unexpected friendships and love affairs.