A celebrated artist of the Georgian era paints his two young daughters at the family home in Bath. The portrait, known as "Molly &the Captain", becomes instantly famous, its fate destined to echo down the centuries, touching many lives. In the summer of 1889 a young man sits painting a line of elms in Kensington Gardens. One day he glimpses a mother at play with her two daughters and decides to include them in his picture. From that moment he is haunted by dreams that seem to foreshadow his doom. A century later, in Kentish Town, a painter and her grown-up daughters receive news of an ancestor linking them to the long-vanished double portrait of "Molly &the Captain". Meanwhile friendship with a young musician stirs unexpected passions and threatens to tear the family apart.