Suddenly alert to the microchips implanted in their brains, the army of stolen children revolts! But the response of the tyrant Mal Gorman is swift and brutal: He quickly quells the mutiny, sweeping up the fleeing children in spiked nets like so many trapped fish and dragging them back to their training camp.

Juiced by potent Everlife pills, the once cadaver-like Gorman has chemically reversed the aging process; his diabolical mind is now powered by the body of a teenager. But psychic twins Ellie and Mika can read his every evil thought, and they refuse to let him wage his battles. Using their mutant powers, they abduct Gorman and take him beyond The Wall, to the wildlife he so fears. Before all-out war erupts, the brother and sister are determined to reconcile humankind with nature-and to free the captive children.