Rookie cop Sam Staziak has a unique gift: he is a Scanner, which gives him the power to read the thoughts of others, and also to inflict great bodily harm. When a mad scientist begins using mind control to murder police officers, Sam realizes that only he and his unique gift can put an end to the mayhem.

When other Scanners in the Los Angeles area are left drained of life, Sam is forced back into action in a desperate attempt to stop Volkin, who is determined to become the most powerful - and ruthless - of his kind.