Grieving photographer Lu Rile moves into a run-down artists' warehouse in 1990s Brooklyn, where she befriends Katherine, an accomplished painter who lives downstairs. When Katherine suffers her own tragic loss, Lu unknowingly captures the incident in one of her self-portraits, creating a sublime but terrifying image. Consumed with their mutual grief and intensifying relationship, the women discover that they are haunted by a demonic force intent on shaking their reality.