"Alan is very scary. He says things like 'I'm big, scary Alan! Fear my razor-sharp teeth!' But all is not as it seems. Alan, you see, has a very BIG (not-so-scary) secret" -- Front jacket flap.
While spending a day and night in the Robinson household, Wilbur's best friend joins in the search for Grandfather Robinson's missing false teeth and meets one wacky relative after another.