Olivia has accidentally frozen all of the world's water. Worse, her aunt and uncle have been kidnapped by the nefarious Wardenclyffe thugs. With the help of Doug and Gnat, Olivia must fight the forces of evil to save the entire world.

Young Olivia moves to the Florida scrub and finds much more than sand and scrawny oak trees. Caught in a battle for the fate of the universe, she slips down a tortoise burrow into the vast Floridan Aquifer where ancient animals thrive in a mysterious world. She learns the secret of a brilliant pearl and must use its power to discover her life's ultimate destiny.