The epic continuation of Diriliş Ertuğrul, Kuruluş Osman follows Osman Bey — son of Ertuğrul and destined founder of the Ottoman Empire — as he transforms a small Turkic tribe into a sovereign state. Battling the Byzantine Empire, Mongol forces and treachery from within, Osman must prove himself as both a warrior and a leader. A sweeping historical action drama built on faith, honour and the birth of one of history's greatest empires.
Sofia, who was thought dead, returns and joins forces with Commander Lucas, raising Halime, Osman and Bala's daughter, as her niece and training her against her parents, while the Kayi tribe faces threats from the Mongols and internal tensions.