Rome, 410 AD

Half-sister to Emperor Honorius, unmarried and powerless, twenty-year-old Galla Placidia watches from the shadows as imperial policies are made and unmade.

Her plans to gain power and influence are halted when the city is besieged and captured by a vast army led by Alaric the Visigoth. Taken hostage, travelling out of Italy, Galla Placidia falls in love and marries a barbarian king.

At a time when Rome's power is fast dwindling, its authority diminishing year upon year, she embarks on a dangerous and remarkable journey towards the imperial throne.

But what price must a woman pay for power?

This is the compelling story of a little-known, remarkable woman whose burning ambition saw her, against all odds, become empress of Rome.