The TV Series "Тврдокорни" is about the guerrilla leaders from the Ottoman occupation in North Macedonia, focusing on the period from 1894 to 1905. The project consisted 30 episodes, each with a duration of 25-30 minutes broadcasted in HD. The series was filmed across different cities and villages in North Macedonia such as Skopje, Veles, Kratovo, Bitola, Ohrid, Dojran, Makovo etc.