Against all odds, he survives his execution. Impressed by his ferocity, the lanista (gladiator trainer) Quintus Batiatus purchases him. Stripped of his name and his freedom, he is given the title . The season chronicles his brutal journey through the ludus (gladiator school), navigating deadly politics, forming uneasy alliances (most notably with the champion Crixus), and rising to become the "Bringer of Rain."

The evolution from bitter rivals to blood brothers between Spartacus and Crixus, the Undefeated Gaul.