Vincent Bruce, a war veteran, begins working as an occupational therapist at Poplar Lodge, a private psychiatric facility for wealthy people where he meets Lilith Arthur, a charming young woman suffering from schizophrenia, whose fragile beauty captivates all who meet her.

Over the course of one foggy day in August 1912, a retired Irish theater actor grapples with the morphine addiction of his unbalanced wife, debauchery of his older son, and sickness of the youngest son as past guilts, repressed anger, and deep-seated regrets slowly come boiling out, threatening to destroy the family.