London fire, 1666. Houses are engulfed in bright fire, but one of the residents is busy not caring for her own life, but saving family values. The chest was discovered in Cheapside only in 1912 - a loud event that shocked the whole of London... For American historian Kate Kirby, working on jewels can be her life's work. But on a trip to London, family secrets emerge: Kate's grandmother is clearly linked to the find. What happened a hundred years ago in Edwardian London?