Through the good times and bad, the Sparrow family has always stuck together. But as the Blitz ravages London in 1940, each of the Sparrows has their own battle to fight. Nancy finds herself volunteering as a porter at busy Paddington station - a world away from the smart West End dress shop where she used to work. Young Mickey is sent to the front line, while little Leslie suffers as an evacuee. Nancy must summon all her strength to support her loved ones, but they are unaware the woman they rely on hides a painful secret...