Charlie, the not-so-punctual and dependable pawnbroker's assistant, starts his day with his usual duties at the pawnshop--a bit of dusting; some polishing up, and above all, a lot of quarrelling with his co-worker. Before long, a customer arrives--what a fabulous opportunity for Charlie to exhibit his subtle technical skills, and to give his critical scientific evaluation with the use of a rusty can-opener. Then, another client comes, eager to see the diamonds; however, could he be a wolf in sheep's clothing?