When supremely organized seventh-grader, Molly McGinty, loses the notebook she relies on to keep her life in order she spends the day in chaos.

Principal Wagner confidently deals with a faculty washroom crisis, a psychic parrot, and a terrorizing gerbil, but when sixty-five erasers go missing, he enlists the help of the school's best problem solver and locator of lost items, twelve-year-old Lyle Williams, aka Mudshark.