Bayek tracks Flavius to Cyrene, where he has used the activated Apple of Eden to hold the population in thrall. He kills Flavius, avenging Khemu's death and returns to Aya. Aya recruits Marcus Junius Brutus the Younger and Gaius Cassius Longinus to their cause and heads to Rome to assassinate Caesar and Septimius. Bayek and Aya part ways but form the Hidden Ones, the foundation of the Assassin Brotherhood when they both swear to protect the world from the shadows. In Rome, Aya confronts and kills Septimius, who wields the Staff of Eden. She infiltrates the Roman Senate and assassinates Caesar. Later, she meets Cleopatra and warns her to be a fair ruler or she will return to assassinate her. Afterward, Bayek and Aya (now calling herself Amunet) begin recruiting and training other Hidden Ones as they build the Brotherhood in Egypt and Rome, respectively.