When strange, trance-like behavior spreads across New York, Spider-Man discovers that the mutant hypnotist Mesmero is behind it. Using his psychic powers, Mesmero enslaves citizens to build his criminal empire—until Spider-Man becomes the final target of his mind control. Fighting through the mental assault, Peter relies on sheer willpower and intellect to turn Mesmero’s abilities back on himself, forcing the villain to fall victim to his own hypnosis. Order is restored, but the city remains shaken by the eerie experience.