Beware the mighty Mendoza for his powers are beyond those of any normal human. Look into his eyes and you too could fall under his dark spell. Through the strange art of hypnosis, the mighty Mendoza can take over your thoughts and control your mind with a mere click of his fingers. Take for instance the case of poor Henry Sterling, a dull, timid and spineless bank clerk. Whilst attending one of Mendoza's astounding shows Henry suddenly finds himself transformed into a confident, sly and deceitful womanizer. Although this extreme change in character certainly brings some colour into Henry's drab existence it doesn't go down too well with his wife. What follows is a madcap chase to capture Henry and return him to dreary normality, which is easier said than done.