Some things which feel truly lost, are really there all along, safely hidden, just waiting to be found. Mirepoix, France. Summer 1981: In a small village in southern France, a wilful English girl is falling in love. Frances Langley has fallen under Benoit's romantic spell, and their summer of love finds Frances willing to do almost anything for the handsome art collector, even hiding a precious Klinkosch box for him, stolen by the Nazis decades before. The Cotswolds, England. Summer 2022: Years later, Frances's son, Harry, finds himself packing up the clutter and chaos of his late mother's home. Little does he know that his mother had sent a letter to Tabitha-the lost love of his life, begging the pair to search for a priceless jewellery box, hidden somewhere in her cottage. Harry quickly dismisses the search, but as an art historian, Tabitha cannot risk the chance to recover something so valuable that was long thought to be lost.

And so they embark on a journey of discovery, but soon find themselves searching for much more than a missing piece of art.