The series is a Turkish sci-fi thriller about a mysterious epidemic of madness that has engulfed the entire world. People are infected with the disease at a shocking speed, but the carrier is not the air or blood, but human speech. After talking to an infected person, you soon adopt their abnormal judgments and views on life. However, a guy named Murat realizes that he is immune to the collective madness. In order to find the solution, he must leave the safe zone of Istanbul and venture into the vastness of a crumbling world. The series is called "Sıcak Kafa" in Turkish.