In the early 19th century, Charles Adare arrives in New South Wales, Australia, seeking to make his fortune. He reconnects with Sam Flusky, an ex-convict turned successful landowner. Sam introduces Charles to his wife, Lady Henrietta, who is battling alcoholism and mental distress. Charles takes interest in helping Henrietta reclaim her life, uncovering that she was once a member of the aristocracy in Ireland. As he spends more time with Henrietta, Charles becomes concerned about her well-being and the fierce hold Sam seems to have over her. This relationship is further complicated by secrets from their past that begin to surface.

While trying to aid Henrietta in her struggle, Charles unwittingly stirs up long-buried tensions and rivalries within the household. He discovers unsettling truths about the lives and interactions of those around him. The intricate dynamics between Henrietta, Sam, and their sinister housekeeper, Milly, create a web of intrigue and suspicion. As revelations come to light, questions of loyalty, love, and betrayal arise, threatening to unravel the fragile peace in their lives. With each layer of their past unfolding, the true nature of their relationships is put to the ultimate test.