'I'll dress up as a human being and Polly won't have any idea that I'm a wolf . . .' When Polly opens the door and finds a large black wolf standing on the doorstep waiting to gobble her up, it's the wolf that has the surprise when Polly invites him in! Clever Polly isn't frightened at all and has a plan that's bound to outwit the big, bad but very stupid wolf.
