The emperor Caligula has decided in order to win the hearts of the Roman people, he needs to win a military victory. He's set his eye on conquering Britannia, that wild, barbaric place where no Roman had ever before triumphed. Arianna joins him on campaign, along with Cassius Chaerea, the commander of the Praetorian Guard who has confessed his love for her in secret. But even while on campaign Caligula is unable to leave his darkest desires alone. As the campaign goes from bad to worse, it's clear only one thing will prevent a military disaster; a ritual to appease Neptune. Arianna discovers that she will play a vital role in this ritual. But is she prepared to be taken by the entire legion, in order to ensure her master's victory? The Emperor's Battle is an 10,000 word erotica short serial exploring the debaucheries of life under the reign of the Emperor Caligula. Read the previous episodes to get up-to-date on the story so far!