Mehmed launches an ambitious siege to break through the walls of Constantinople, but Giustiniani's mercenaries manage to forestall the Janissaries.

Mehmed's men dig underground tunnels in an attempt to shatter city walls. The tides turn against the Ottomans when a naval blockade founders.

Mehmed moves his ships overland to the Golden Horn in a daring, visionary feat. In the shadow of betrayal, Giustiniani attacks the Ottoman fleet.

Amid a spiral of brutality and low morale, Mehmed makes Giustiniani an enticing offer. The grand vizier urges Mehmed to seek a truce with his rival.

Ottoman cannons reduce the city walls to rubble, and Venetian reinforcements arrive too late. Mehmed ushers in a new era for the Ottoman Empire.