On the heels of the bloody escape from the House of Batiatus that concluded "Spartacus: Blood and Sand", the gladiator rebellion continues and begins to strike fear into the heart of the Roman Republic in "Spartacus: Vengeance". Gaius Claudius Glaber and his Roman troops are sent to Capua to crush the growing band of freed slaves that Spartacus leads before it can inflict further damage. Spartacus is presented the choice of satisfying his personal need for vengeance against the man that condemned his wife to slavery and eventual death or making the larger sacrifices necessary to keep his budding army from breaking apart. Containing all of the blood-soaked action, exotic sexuality, and villainy and heroism that has come to distinguish the series, the tale of Spartacus resumes in epic fashion.
Spartacus discovers the grave responsibilities and costs involved in his new role as a leader of freed slaves. Claudius Glaber’s arrival in Capua forces Spartacus to keep his rebellious band intact.
Spartacus and his men liberate a Roman villa, but its slaves are wary. Oenomaus throws himself into the brutal Pits, and Glaber supports Lucretia’s prophecies, despite Ilithyia’s protests.
Spartacus must navigate a divide that opens up among the gladiators after news of Naevia’s fate. Lucretia reveals a long-held secret to gain information, and an attack puts the rebels at risk.
Spartacus leads survivors through the woods, but Crixus gets separated and returns to a place of past suffering. Lucretia pries into Ilithyia’s affairs, seeking influence with a powerful Roman.
Spartacus leads a bold mission to free Crixus from Roman captivity, but a storied gladiator from the House of Batiatus complicates matters. Ilithyia’s scheming puts her marriage to Glaber at risk.
Spartacus urges his restless rebels to train for the defense of their new sanctuary. Lucretia and Ilithyia seek comfort from each other, while Glaber's forces swell with some deadly new recruits.
Spartacus and his rebels try to increase their numbers by freeing fighters enslaved in foreign wars. Lucretia seeks to recruit one of her husband's former gladiators to outmaneuver powerful Romans.
Spartacus gets a chance for vengeance when a prominent Roman is captured, but will he satisfy desire at the cost of the greater good? The intrigue amongst Glaber and the women surrounding him heats up.
Spartacus must convince his people to unite against the imminent Roman assault. Lucretia struggles to be free from the commands of men who threaten her fate, and Glaber's ruthlessness has consequences.
Dwindling supplies and a superior Roman enemy brings the rebellion to its knees. Spartacus must restore hope to his people, as they careen towards their final confrontation with Glaber's army.