American executive Conrad Tucker sees a photograph in a magazine of the wealthy Aird family's youngest daughter, and begins a quest to discover if she is the result of his affair with her mother Virginia. Determined to learn the truth, he sets out to uncover the family's long-kept secrets along the way.
Laura Aird becomes a successful publishing executive, returning from America and moving to London. However, when her grandmother Violet dies, she leaves her share of the family company to a woman named Olivia Thorpe.
Long-forgotten scandals from the Aird clan's ancestral history continue to be exposed, and the chain of revelations reaches a shocking conclusion.
In a flashback, Laura Aird is seen withdrawing totally from society after tragedy strikes. Hamish Balmerino is concerned about her state of mind, and the forthcoming ball does nothing to improve matters, so her father decides to make her sister Alexa's husband the head of the family business.