Hafir: The Dark Grave tells the story of a family that encounters terrible events wherever they go for business. Nadir, who works in a mining company, is sent from Istanbul to Zonguldak to take a soil sample. Nadir, who came to Zonguldak with his children, settled in a village house. After a while, Nadir and his children begin to experience strange events in their new home. Nadir, who is trying to solve the extraordinary events that become unbearable day by day, learns that terrible events took place in the house they live in years ago. These terrifying events strengthen family ties.