On the heels of the bloody escape from the House of Batiatus, the gladiator rebellion continues and begins to strike fear into the heart of the Roman Republic. 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.
Spartacus realizes that becoming the leader of a mass of freed slaves can be challenging and he struggles to keep the rebellious group intact when news of Claudius Glaber's arrival in Capua reaches him.
Spartacus is forced to mediate when the gladiators are close to divide into groups after news of Naevia's fate reaches them. Lucretia exchanges a long-held secret for some information and an attack puts the rebels at risk.
In an ironic twist of fate, a gladiator from the house of Batiatus will stand in the way of Spartacus trying to free Crixus from Roman captivity. Ilithyia's scheming puts her marriage to Glaber at risk.