How do you prove you are who you claim to be? After the death of the only parents she ever knew, Kirsty McGregor is devastated to learn she was adopted. In the course of trying to establish her true identity, she uncovers a possible link to a longstanding deceased estate which includes a substantial property and a big old house. The gruelling process to prove her identity, necessary to substantiate her claim, leaves her psychologically fragile and in a dark place. Long-time friend and Private Investigator, Sonoma (Sonny) Whittington, steps in to help search for any surviving members of Kirsty's family, and to help and support Kirsty in discovering her tragic background.