Agâh Beyoglu is a retired 65-year-old bailiff. He lives alone in Beyoglu, the most populous and vibrant district of Istanbul. His daughter lives abroad and his wife died years ago. Agâh's monotonous life changes with the diagnosis of the onset of Alzheimer's. He will forget all his memories because of his illness. At first he does not want to accept this fact, but then Agâh realizes that forgetting is an opportunity. An opportunity to commit a murder he's been planning for years. Meanwhile, Nevra, the only female police officer in the homicide unit, is on the brink of resigning due to the heavy workload. However, Agâh's decision to kill will completely change Nevra's life.