Spartacus attempts to launch a bold assault to obtain food and shelter for his followers, while Crassus raises a formidable army and welcomes the arrival of a surprise visitor.
The possible infiltration of a Roman spy into the rebel camp, causes tension to mount between Spartacus and his men. Crassus resurrects a long abandoned form of Roman punishment to teach his soldiers a brutal lesson following their cowardice in the recent battle.
Spartacus puts a plan in motion to weaken Crassus' forces and gain the upper hand on the battlefield,but a betrayal threatens to foil his plan.
With their forces trapped on an impassable, snowbound ridge, Spartacus and Crixus clash over a method of escape. Crassus findsit increasingly difficult to control the actions of those closest to him.