The Centurions are badly defeated in the battle for Sand Castle. Crystal retrieves them, but not in time to keep Max from suffering serious injury. While he recovers in the hospital, Ace and Jake visit Terror in the North American Rehabilitation Facility to try to learn more about Uniborg. Terror tells them how Uniborg was accidentally created, but refuses to disclose the location of Dominion. The Centurions are called to try to defend Fire Castle, the southernmost of Skyvault's ground-based surveillance outposts. They are again defeated, and Ace surrenders Fire Castle in exchange for a badly wounded Jake. Ace strikes a deal with Terror: His freedom in exchange for help to defeat Uniborg. Uniborg is expected to strike next at Ice Castle, and Terror plans to break back into Dominion during that attack. Against Crystal's protests, Ace agrees to act as a diversion to cover for the break-in. Science Lesson: How plants communicate with each other by Jake.
Elenco: Diane Pershing , Pat Fraley , Vince Edwards .