HOT DIGGITY DANGER. The world is in MEGA TROUBLE and only Lucy Sladan knows it. Her dear friend Milo is trapped in a mystifying mile-wide blob, his scheming father has kidnapped her extraordinary neighbours, and a mysterious ancient civilisation is hurtling across the galaxy to destroy all life on Earth. But not even an intergalactic invasion can keep Lucy from the mind-melting TRUTH that could save us all.