 Harrison Fell is an advertising executive who comes with a brilliant publicity stunt for one of the company s major clients, a safe manufacturer that claims to have created a burglar-proof safe. He asks Sammy Morrisey, once billed as the world s greatest safe cracker, to try to break into the safe. Morrisey isn t keen on the idea as he now has a new profession and has tried to put those days behind him. As an incentive, Morrisey is told that an envelope with $50,000 will be put in the safe and if he can break in, he gets to keep the money. Morrisey accepts the offer, with surprising results for all.