November 1918. Stanley is convinced that the precious stained-glass window from the church, that Martha’s grandfather hid during the war, will save his village. But Martha refuses to help him search, wanting to keep her beloved grandfather’s secrets safe. When Stanley's mother gets ill, Martha visits the village, and realises she must act to help. She begins her own treasure hunt, even as her father is also struggling with the aftermath of the Great War. As the people who are most important to them suffer, Martha and Stanley are desperate to find their lost treasure and restore the village's fortunes before it's too late.