Leonora Bolt makes amazing gadgets from any old junk. And her inventions have already stopped villainous Uncle Luther twice, though she hasn't rescued her super-scientist parents from him - yet. Leonora and her pals find clues that lead them to Luther's latest evil plan. It's an amusement park called BrightWorld built in a desert, under a massive snow globe - and it's terrible for the environment! But when all their fancy-pants gadgets fail in the hot-hot heat, it's down to Leonora to use her eco-engineering imagination. Can she invent something to shut down Brightworld and save her parents - before there's a meltdown? With nothing but courage and Leonora's trusty tool belt to hand, the gang must battle swirling sandstorms, navigate plunging canyons and finish Uncle Luther... for good!