The Romans, in an effort to protect their homeland, seek the help of Thracian warrior Spartacus and his team of fighters. After a violent incident, Spartacus must enter the gladiator ring to face his punishment from the Romans.

Enslaved in gladiatorial school, the newly christened Spartacus must try to suppress his desire for vengeance when his new master promises to reunite him with his wife.

Though Spartacus proved himself during training and now wears the attire of a gladiator, his coarse attitude and relentless quest to see his wife isolates him from his fellow gladiators and Doctore.

Having performed shamefully in the arena against Crixus, Spartacus is forced to fight in the Pits. Batiatus, determined to profit from Spartacus, may be at risk if his debts aren't repaid.

Batiatus is presented with a gladiatorial opportunity of a lifetime. Spartacus and Crixus must overcome their mutual hostility to fight as a team against a legendary and unbeaten opponent.

Lies, distrust and duplicity plague the house of Batiatus and impact the hopes of both Barca and Spartacus, who have benefited from good fortune and envision a future away from the grounds. Barca expects to buy his and his male lover's way out, while Spartacus anticipates his promised reunion with his enslaved wife, part of his reward for a monumental victory in the arena. But just in case things go wrong, Spartacus dreams and schemes an escape plan.

Overcome by the pressure of Batiatus's control, Spartacus must make a choice: leave his past behind and assume the mantle of a champion gladiator, or die.

Batiatus purchases a fresh batch of slaves during an auction to be trained as gladiators and ponders the idea of selling Crixus.

Batiatus breaks the news that Spartacus is to service the richest woman in Rome.

Numerius is honored with an exhibition match for his birthday celebration at the ludus. Ilithyia gives Numerius a surprising gift, but asks for something in return.

Spartacus hovers on the brink. Meanwhile, Batiatus plots revenge against his enemies

Lucretia and Batiatus await the arrival of Glaber with the intentions to receive his patronage, while Spartacus focuses his attention on his plan for revenge.

In the season finale, Spartacus enlists the help of an accomplice in order to get his revenge.

A younger Batiatus finds himself newly in control of his father’s gladiator school. He uses his most skilled fighter to win favor with a cunning nobleman behind the building of the new arena.

Batiatus conjures up a devious plan and enlists Lucretia, Gaia and a clutch of gladiator recruits to see it through. Oenomaus longs to reclaim the top gladiator rank, but new challenges cross his path.

Just as his fortunes are on the rise, his future clear before him, Batiatus is stunned by the return of his father which puts his attempts to gain rank by exploiting those above his class at risk.

The House of Batiatus is caught in the power struggle between the younger and elder Batiatus. Lucretia reluctantly agrees to her husband’s risky plan. Gannicus finds himself on unstable ground.

Batiatus’ father announces a tournament to determine the worth of the men that make up his stable of gladiators. Crixus, dedicated to proving himself, is drawn into the power play within the house.

Batiatus seeks vengeance for all that has befallen him and retains his gladiators and Solonius in the cause. The opening of the new arena arrives, promising a spectacle of combat and blood.