Summary: In Colorado, mercenaries hired by Doc Terror stage a diversion to keep the Centurions busy by attempting to steal a shipment of plutonium. As they battle each other, Terror implements his plan to sink the entire city of Denver into a huge underground cavern and turn all of the city's inhabitants into cyborgs. The Centurions journey underground to get to the captive city and encounter Terror's new cyborg-enhanced mercenaries, who have stolen their exoframes. Weaponless, the Centurions have to figure out a way of saving both themselves and the city of Denver from Doc Terror's forces.
Science Lesson: "Caves" by Jake.
- La caída de Denver (The Fall of Denver) - Spanish dub.