It's 1939 when Hannah and Louie Adams wave goodbye to their mother and home in Holloway, leaving for the safety of the Hertfordshire countryside. The girls try to settle in with their new foster-parents, but the Bullocks are stern people, and when they send the homesick Louie to another family, the Beedles, Hannah is devastated. She decides there's only one way out - she must walk back to Blitz-torn Islington. Thirty-six hours later, a cold, weary and frightened girl arrives home to a shocking sight...