A forgotten mansion. A wartime secret. What lies behind the door of the Cornish house?

Cornwall, 1944: As her beloved brother fights the Nazis in Europe, Mary Trewallis works tirelessly on the makeshift hospital wards for injured servicemen that have taken over her family's grand ancestral home on the edge of Bodmin Moor.

Her world changes forever when she meets dashing Australian pilot Ned Sullivan, while collecting vital medical supplies from the nearby airbase. Ned is far from the sort of man her parents expect her to marry, yet Mary falls head over heels in love with him. For the very first time, she dares to hope for a future in peacetime and a life lived on her own terms.

But when her dreams are shattered by the terrible impact of war, Mary is faced with an impossible choice...

Sydney, Present Day: Lucy Anderson's fairy-tale wedding day turns into a disaster when her fiancé abandons her just before the ceremony. As she tries to move on with her life, her mother receives an unexpected letter from a law firm in England informing her she has inherited a house in Cornwall.

Armed with a non-refundable honeymoon ticket to London and a desperate need to escape, Lucy makes an dramatic decision: she is going to England to see the house.

As Lucy tries to work out exactly what connects this crumbling manor to her own family, she will uncover a secret from decades past that has the power to change her life forever...