The fifth graders of Liberty Falls Elementary have a reputation for trouble, but they manage to convince their principal to let them go on a field trip to the mansion of Edward Minks (local inventor, founder of the town, and great-great-great grandfather of fifth-grader Eddie), and search for the secret inventions that are rumored to be hidden there--but once at the estate they find that they are not the only people searching, and somehow this class of trouble-makers must work together to thwart the thieves.-- Provided by Publisher.