After a class trip to a floating zoo where animals are mistreated and Savannah's missing pet monkey is found in a cage, Long Island sixth-grader Griffin Bing and his band of misfits plan a rescue.
After learning that she has the power to communicate with rodents, ten-year-old Emmy seeks a way to stop Miss Barmy, an evil nanny who has been turned into a rat, from stealing jewels from Emmy's wealthy parents.
Eric, Neal, and Julie return to Droon and learn that a thief is stealing dreams from the inhabitants of Droon. Finding this thief could be a nightmare.