Assassin's Creed 2 The Battle of Forli DLC - A Warm Welcome, Bodyguard

After Ezio Auditore is initiated into the Assassin Order, he is tasked to protect the Apple of Eden. His uncle and fellow assassin, Mario Auditore, suggested to take it to the fortified city of Forlì. His reasoning behind this was that the countess, Caterina Sforza, was their ally.