Kaan has difficulty getting a higher position in his work where he has built a good career. While he was occupied with his wife, children and his work, he has pretty much neglected his father. Until one day he is obliged to take care of him.

A murderer, organ mafia, and a cat and mouse game surrounded by refugees from their lives on the road to freedom. Will the good and the bad lose in the Longest Night seeking answers to the question of law or justice? In the director's chair, the cast of "Longest Night", in which Orhan Kılıç sits, includes names such as Eda Erol, Cem Kılıç, Murat Aydın, Gamze Dar, Mustafa Yılmaz, Ece Müderrisoğlu, Ayça Denker, and Umut Özkan.

A group of men lead a search for a victim of a murder to whom a suspect named Kenan and his mentally challenged brother confessed. However, the search is proving more difficult than expected as Kenan is fuzzy as to the body's location. As the group continues looking and the night begins dragging on, its members can't help but chat with each other about everyday life, as the conversations turn more and more serious, revealing their deeper secrets and profound stories.

Leaving behind a ruined career and a bitter divorce, Selim returns to his hometown Izmir. Unwilling to make plans for the future, he wanders around revisiting his past: family, schoolmates, an ex-lover. He runs into Cihan, a friend from the military service, an idler with a charming energy. As people start leaving Izmir due to a terrible smell caused by a mysterious maritime accident, Selim finds himself gradually drawn to a new world where he will go back embracing the possibilities of life.

Professor Niyazi Gül is an animal-loving veterinarian who possesses the unique ability to speak with animals. Living a quiet life in İzmir while developing a secret formula with his assistant, Hediye, his world is turned upside down when Sultan and Rıza drag him into a chaotic horse racing scheme.