Spartacus seeks the safety of the woods for his surviving men while Crixus finds himself revisiting past horrors. Meanwhile, Lucretia spies Ilithyia's affairs.

Spartacus continues to build a formidable army and outwit Romes best commanders. The powers of the Empire are forced to turn to wealthy, ambitious Marcus Crassus to aid the campaign.

As Crassus leads an onslaught against the rebel-occupied city, Gannicus finds himself trapped behind enemy lines. Tiberius is tasked by Crassus to hold a celebration in honor of a man he despises.