Osman Bey, who has become a state, wants to unite the Turks under his own banner and make the influential principalities on the borders subject to himself. Will Bayhan Bey and his arch-enemy Begüm Hatun, who have taken action to join Osman Bey's wedding, pay homage to Osman Bey? Will they reveal their intention to seek Osman Bey's daughter, Fatma Hatun? With the arrival of the Caliph's vizier Emir Ömer, a great storm will break out in the borderlands. What does Osman Bey, who does not know why the vizier has come, whose arrival is kept secret, plan to do about it? After Osman Bey expanded his territory on the borders day by day, the last hope of the Byzantine Empire, which was cornered, was Commander Lucas. Commander Lucas, who holds the holy relics in his hands, came to the borders with his words of justice and mercy, which caused a great repercussion. Lucas is in a big game against the Turks.