The story of the series “The Founder Othman”. The events of the series revolve around the conqueror, Othman I, the founder of the Ottoman Empire, and about the establishment of the state and its transfer from poverty and loss to strength and solidity by Othman, who is the third and youngest son of Ertugrul. He succeeds his father after his death, and follows in his footsteps to achieve great victories and establish the Ottoman Empire. . The series also presents the conflicts between the Ottoman Empire, the Mongols, the Tatars, the Crusaders, the Persians, and the Romans, and the challenges facing Othman in establishing his state, especially with the people of his tribe, and his dispute with his uncle Dundar.