Darryl Revok is the most powerful of all the scanners, and is the head of the underground scanner movement for world domination. Scanners have great psychic power, strong enough to control minds; they can inflict enormous pain/damage on their victims. Doctor Paul Ruth finds a scanner that Revok hasn’t, and converts him to their cause – to destroy the underground movement.

A young female scanner turns from a sweet young thing into a murderous, power-crazed villain after she takes an experimental drug developed by her father. Her brother, who is also a scanner, is the only one powerful enough to stop her.

A scanner discovers a plot by renegade elements in the city government to take power with the help of evil scanners.