"I'm Crazy Bob! And you're trapped in my Junkyard!
Trapped. Your only hope of getting out is to build some sort of device from all the junk that will allow you to escape. Like, maybe a car, or a flying machine....or maybe a space ship!
The object of the game is to collect junk and build all kinds of things to help you along your adventure, like a toaster gun for shooting that annoying dog Spike.
I did not realize it when I first bought it, but this game has a subtle tie in to the Who Dunnit pinball game (you can see "Tony's Palace" sign in the artwork on the backbox and playfield). Turns out most of the same designers who made Who Dunnit also made Junkyard.