Caesar re-enters Rome. He reorganizes the Senate and he makes that they proclaim him the Emperor of Rome. Feeling worried about the Senators’ malcontent, he places faithful Lucio at his side, proclaiming him Senator. Tito Pullio finds out that Odessa does not love him and that she has a slave as a lover. Tito kills the man in Lucio's house. Caesar is alone against all the rebellious senators and he falls into a trap, with Brute among his assassins.