Back in Florence, Ezio hometown, what he see is not a peaceful town he used to see, but a chaotic town. Machiavelli explain what happen when he was gone. The one who steal The Apple of Eden, the black robe man,  used it's power to gain control the city. He used it to control important person in town. They are nobles, pastor, doctor, artist, and he even control the person who in charge of food supply, made the people has no choice but to follow them. Some of them even believe the black robed man is a god, and consciously follow him. He also control the army of different order and made them fight each other. The town became so chaotic as if a war is going in the city.