Cestvs, a 15-year-old slave fighter, wishes to escape his violent life in the year 54 AD. Cestvs' owner has promised to grant him this wish, but only after he has won 100 battles. Cestvs, on the other hand, quickly accepts that, as a slave, his life is meaningless. After his friend's death, the prospect of freedom is the only thing keeping him going. Cestvs sets out on a journey to earn his freedom, even if it means fighting other slaves for the sake of the public's entertainment.