Colosseum: Rome's Arena of Death (2003)

A semi-documentary about the life of Verus, a captive from the Rome's Balkan province of Moesia, who is pressed into the harsh life of a slave in Italian rock quarry. He sees no long term future there, so when the owner of a gladiatorial school comes there to recruit prospective fighters for his school, he purposely picks a fight with another slave to attract attention. Both he and Priscus, the Celtic slave, join the school, become friends, and build careers as renowned gladiators, adored by the crowds in the arena and desired by women of the aristocratic class. The Emporer Titus completes his father Vespasian's pet project, the Colosseum, and wants the inaugural games worthy of his memory, so he specifically selects Verus to fight in them.