In 54 AD, 15-year-old slave fighter Cestvs wants one thing: to escape his violent existence. His owner has promised to grant this wish, but only after Cestvs wins 100 battles. However, Cestvs soon accepts that, as a slave, his life is expendable. Following his friend's death, the chance of freedom is the sole thing sustaining him. Driven by a fierce ambition to achieve it, Cestvs sets out to earn his own freedom, even if it requires fighting other slaves for public amusement.