The story takes place in Istanbul. A lonely pensioner, who used to work as a forensic expert, has been diagnosed with Alzheimer's disease. Having spent his whole life in an atmosphere of injustice and corruption, the man decides to confront those who have wronged him. While he still has some memories left, the protagonist resolves to commit a murder he has been planning for many years. At the same time, a detective named Nevra, who is the only woman in her department, starts hunting him down.