The story is told through Tiro, secretary of Cicero, detailing Cicero's last fifteen years. It begins with Cicero fleeing Publius Clodius Pulcher and his mob in Rome and going into exile in Thessalonica. He is able to return to Rome after more than a year under the promise to support Julius Caesar. Back in Rome, he attempts to revive the Roman Republic, but the forces against this are too strong. A triumverate of Julius Caesar, Pompey, and Crassus eventually becomes one when Caesar takes control after a civil war. Caesar becomes too powerful and is murdered by a group led by Gaius Cassius Longinus, Decimus Junius Brutus, and Marcus Junius Brutus. The Senate fails to take control and Mark Antony rises. Cicero sets his hopes on the young Octavian, but when Octavian strikes a deal with Antony and Marcus Aemilius Lepidus, Cicero is doomed and the days of the Republic are over. Tiro also relates family and personal matters during Cicero's final years.