As Osman Bey continues to pursue his goal of establishing a state, he finds himself facing formidable adversaries. He not only grapples with enemies disguised as friends within his own ranks but also engages in a battle against the Byzantine Empire on the outside. Osman Bey has set his sights on a specific objective: the conquest of the Marmara Fortress, a crucial step towards gaining control over Bursa and Iznik, and further advancing his ambitions.