May, a young architect who has just moved into a suburban house with her boyfriend Gun, learns of the death of her stepmother Po. Po’s daughter Noon says someone killed her mother, but no clear evidence emerges. When May brings Noon home, Noon displays alarming symptoms of possession, and May’s own health deteriorates. Gun calls on Chok, Sak, and Master Khom, who discovers black magic rooted in the house’s past and in the cursed Master’s Facial Skin.