In the late 19th century, a young doctor named Edward Newgate arrives at a mental asylum in the English countryside to begin his apprenticeship. The facility is overseen by the seemingly progressive and open-minded superintendent, Dr. Silas Lamb. Edward quickly becomes intrigued by one of the patients, Eliza Graves, who suffers from hysteria and displays an acute awareness of her surroundings. As he gets to know the patients and staff, Edward starts to notice some peculiar and unsettling practices within the institution.

His curiosity leads him to discover that not everything at the asylum is as it appears. A dark and twisted reality lurks beneath the surface, involving secretive treatments and unorthodox methodologies. As Edward delves deeper into the asylum's mysteries, his findings force him to confront his own perceptions of sanity and madness. The ensuing revelations challenge his convictions and compel him to take action to uncover the hidden truths within the confines of the asylum.