S4·E24 Episode 122

Despite challenges from Ismihan Sultan and Nayman, Osman Bey persists in his conquests with a clear goal. He prepares extensively for the conquest of Köprühisar. However, a devastating surprise awaits as Ismihan Sultan collaborates with Nayman to destroy Osman Bey. Ismihan assigns Bayındır Bey to assassinate Osman Bey in his mansion, while Bengi Hatun supports Ismihan Sultan. Nayman attacks Osman Bey's war headquarters, and the mansion is engulfed in flames.