Welcome to Retroville! Keep your hands inside the rocket at all times, don't get too close to the girl eating plant, and be careful not to step on the invisible hamsters. Wondering where all this wonderful stuff comes from? Why, James Isaac Neutron, of course, Retroville's resident Boy Genius. Jimmy's amazing inventions make his life easier and more interesting... when they work the way they're supposed to. Which is rare. But for Jimmy, his robot dog Goddard and his pals Carl and Sheen, every short circuit is a new adventure!