After his family moves to Wisconsin, eleven-year-old Ryan Evans is certain that his summer is doomed, until a glowing ghost bookmobile, complete with a ghost librarian and her mischievous ghost niece, enters his life...
Despairing over the fact that his bratty five-year-old sister Jessie ruins everything he tries to do with his Cub Scout den, Adam never suspects that she may be only person who can save the den from dissolving...