Goliath & Co. arrive at Easter Island with a sleeping Elisa, unaware that they are being monitored by sophisticated technology. While Goliath and Angela scout the island, a strange humanoid figure stuns Bronx and takes Elisa. While they look, local archaeologists spot an amnesiac Elisa walking down the road. A glowing sphere stuns Bronx again and the same figure approaches him, then stuns Angela. Goliath follows her as she is taken to a local hotel and a doctor examines her but is unable to determine anything. Goliath shows himself and takes her despite her resistance (due to her lack of memories) and explains their history together. Meanwhile, Angela is imprisoned in a high-tech base and denies the accusations of an alien figure claiming she is an alien sent to invade Earth.
Elisa flees while Goliath spots a ghostly image of Angela that lures him in to a trap. Elisa sees the same figure capture Goliath, who admits he gave Elisa her amnesia but believes she was brainwashed by Goliath. The alien, Nokkar, takes her into his base and explains that he is a soldier, a Sentinel, defending Earth for centuries as a strategic outpost against an alien armada. He prepares to execute the gargoyles but Elisa turns against him, freeing the others. They fight back and trash his base, escaping through a blast-hole. But Nokkar activates the ship and threatens to kill them all, even though Elisa refuses to leave their side. Nokkar accepts that Elisa must be telling the truth and Elisa advises him to break his centuries of isolation and meet with the locals.