Dex Dingo isn't the BEST at anything. He's not the SMARTEST, the FUNNIEST, the STRONGEST, or the NICEST. But he wants to be the WORLD'S BEST GREATEST EVER...at something. So when Dex's teacher asks, "If you could be anything when you grow up, what would you be," Dex decides that he's going to be the best at one of the "best jobs ever."

First on his list: an inventor! Dex is able to create an awesome lab and an amazing team of nanobots, but things immediately go wrong when the nanobots start to multiply and form a gray goo that threatens to take over his neighborhood. It'll take some quick thinking and a rogue nanobot named Nono for Dex to stop the nanobots, save his best friend, and become the WORLD'S BEST GREATEST EVER INVENTOR.