Osman, nephew of Dündar Bey, navigates a treacherous path as he confronts the machinations of Selçuk Sançak Bey Alişar and the ruthless Sofia of Kulucahisar, who plots against the Kayı tribe, while also battling external threats from the Mongols, culminating in the conquest of Kulucahisar and Osman's marriage to Bala.