London, 1938: Lizzie Larch is a 20-year-old hat maker in London's east end. She is happy and popular, but she carries a secret. Seven years ago she was viciously attacked and recovered in a private sanatorium where she miscarried a child.

Lizzie has no memory of the night of the attack, but secrets cannot stay secret for too long. When she starts courting her boss' nephew, a shocking revelation surfaces; threatening to destroy their new-found happiness.