Among the rulers there were many great and insignificant, but virtuous - a few, among whom was the Roman Emperor Antoninus Pius. Perhaps that is why it was Antoninus Pius who faced an unusual confrontation - a battle with shadows. However, these are not shadows that have become a symbol of empty fears. The shadows creeping over the Eternal City are the first harbingers of rebellion and civil war. And along with them, a mysterious and dangerous sect appears in Rome, whose members, according to rumors, can turn into shadows and influence the minds of others.