Twelve-year-old Jenny Anderson's life is a wreck Her brother, Austin--a freshman wide receiver at Colorado State University--has been accused of dealing drugs. No way Jenny knows he's innocent, and somehow she has to prove it--especially when Austin and their parents are leaving his fate in the hands of the family attorney, who claims he'll take care of everything. Hardly With no one to help her solve the mystery, her golden retriever, Shiloh, leads her to a cave--one she didn't even know existed--behind their Franktown, Colorado home. They wind their way through the cave, which is filled with living breathing soil, glittering walls and a thunderous waterfall. When they exit the other end of the cave, they find themselves almost 100 years in the future--a future filled with endlessly fascinating innovations and gadgets, as well as violent weather and terrifying creatures. There they also encounter a mysterious old man, who offers his help to clear Austin's name. But, before Jenny can prove her brother's innocence, he's arrested for assault and battery. If the victim dies, the charge will be murder Who's setting up Austin and why? Jenny has to find out in a race against time--and a race against those who want to stop her investigation dead in its tracks