During a torrential downpour at noon on October 13 in the year of 54 AD, Nero became the emperor of Rome at the mere age of 17. Meanwhile, on the outskirts of Rome at a boxing training school for slaves, the final selections were underway. A 15-year-old boy named Cestvs was fighting against his best friend to become the next boxer. After being selected, he visits the imperial capital of Rome for a match and meets his lifelong rival, Ruska. Nero watches the match between Cestvs and Ruska and takes an interest in the two boxers. He invites them to his palace, but is discovered by Agrippina and things go in an unforeseen direction.

As this action-packed story of Colosseum boxers forced to keep fighting unfolds, witness firsthand how Cestvs refuses to give in to the lot he has been given.