The Ninja Librarian's back in town, school's out, and all's right with the world...or is it? Big Al may be looking forward to spending her time swimming in the creek and wandering the hills, but Peggy's looking forward to a life of drudgery. If Al can't find a way to sway her pa, the brightest kid in Skunk Corners is going to take drastic action.

With a mystery from the past haunting one of the houses and creating the biggest threat yet to the town, Big Al's going to be kept busy this summer, and not just with practicing her moves for the Ninja Librarian.