After a traumatic past, life finally seems to be looking up for Hanna Foster. But war is on its way... London, 1938. Hanna and Jack Foster had been sent to an orphanage when their parents were killed in a train crash, but were separated when a couple adopted Jack. Bullied and treated like a slave, it soon became clear it was a dreadful mistake. In desperation, Jack takes his future into his own hands and runs away to join the merchant navy, while Hanna takes a job looking after two children. For a time, life seems good, but war is looming and threatens to take away everything Hanna holds dear...