In 1897, four-year-old Lucy Thornbury’s parents are killed in a train crash. Taken in by her kindly uncle and aunt and their son, Lucy overcomes the trauma of her childhood and grows up inspired to become a doctor, just like her father was. But training as a doctor in London takes Lucy far away from home and the people she loves, and she has to battle to be accepted in a man's world. And with the dark clouds of World War I gathering on the horizon, will Lucy be able to follow her dreams and find love in a world shattered by war?