Mehmed, determined to take Constantinople, casts a new hawk cannon and digs a tunnel for underground advance. Satılmış Ağa helps overcome obstacles in the tunnel. After the martyrdom of his spy Mustafa, only Fatima remains to provide crucial war-changing news to Mehmed.

Guistiniani, after securing help from the Pope, brings aid to Constantinople with John Grant. Mehmed must decide how to stop these aid ships. Battal, seeking revenge for his murdered family, targets Janosh. Whether Battal will succeed in killing Janosh is uncertain.

Notaras disapproves of his daughter Anna's relationship with Guistiniani, preferring her to marry Konstantinos. Anna's suicide disrupts Notaras' plans, creating uncertainty about her survival and Notaras' next move.

Kalender, consolidating power, faces opposition from Kurtçu, leading to a conflict that will influence upcoming events.