Charlotte, a wealth counsellor who knows from personal experience the complications that a sudden inheritance can bring, helps her clients navigate the emotional side effects of sudden wealth syndrome. When she is asked by Mateo Mendoza, heir to a huge Spanish estate, to fly to Madrid to help resolve an issue in his father's will, she's confident it will be straightforward. The timing isn't great as Charlotte's due to get married the following week, but once her client signs on the dotted line, Charlotte can return to her life in London and her wedding, and live happily ever after. Marrying Stephen might not fill her with excitement, but she doesn't want to live in the fast lane anymore -- safe and predictable is good. But Carlos Mendoza's final bequest opens up a generation of secrets, and Charlotte finds herself compelled to unravel the mystery. As Charlotte digs deeper, she uncovers the story of a family divided by Spain's Civil War, and of a love affair across the battle lines that ended in tragedy. And while she is consumed in the drama of the Mendozas, Charlotte's own tragic past catches up with her, threatening to overturn everything in her life she's worked so hard to build.