Firearm heiress Sarah Winchester is convinced that she is haunted by the souls killed at the hands of the Winchester repeating rifle. After the sudden deaths of her husband and child, she throws herself into the construction of an enormous mansion designed to keep the evil spirits at bay. But when skeptical San Francisco psychiatrist Eric Price is dispatched to the estate to evaluate her state of mind, he discovers that her obsession may not be so insane after all.

Celeste is a renowned opera diva who retired early for the man she loved to live on a crumbling and beautiful estate in the heart of a rainforest in Far North Queensland. Ten years after the tragic death of her husband, Mateos, in a boating accident, Celeste is set to return to the stage for her final performance. Her husband’s son Jack, still haunted by the past, arrives amidst the preparations for the performance and finds Celeste is as he remembered – beautiful, intoxicating and dangerous. Celeste wants Jack to stay at the estate, but needs him to perform one last request.