The series focuses on the life of Osman Bey, the son of Ertugrul Gazi and the founder of the Ottoman Empire. Osman begins his journey by forming a friendship with Yorgopolos and the Kayi tribe expands its influence further during the reign of Osman Ghazi, but some problems hinder Osman and he must solve it.
Osman faces many enemies and traitors in his quest and overcomes the obstacles. Osman also marries his love, Bala, amid his reign. He fulfills his missions with the help of his loyal companions, family, and friends.