Severus is hoping to have the new Emperor Titus invest in plans to rebuild Pompeii, despite Cassia's warning of Rome becoming more corrupt. Cassia is the daughter of the city governor Severus ( Jared Harris) and his wife Aurelia ( Carrie-Anne Moss). Milo kills the horse to end its suffering, and Cassia is drawn to him. On the road, they see a horse fall while drawing a carriage carrying Cassia ( Emily Browning), returning after a year in Rome, and her servant Ariadne ( Jessica Lucas). Milo is soon brought to Pompeii with his fellow slaves. Seventeen years later, in Londinium in 79 A.D., slave owner Graecus ( Joe Pingue) watches a class of gladiators battle, unimpressed until he sees the grown Milo ( Kit Harington), a talented gladiator the crowds call 'the Celt'. The only survivor, a boy named Milo, whose mother Corvus personally killed, is captured by slave traders. In northern Britannia, 62 AD, a tribe of Celtic horsemen is brutally wiped out by Romans led by Corvus ( Kiefer Sutherland). ( November 2020) ( Learn how and when to remove this template message) Please help improve it by removing unnecessary details and making it more concise. This section's plot summary may be too long or excessively detailed.