Young Amelia, a secret agent, investigates a class of entranced ballet students, a scarecrow that can control crows, and a librarian whose work on the school library's computers seems to turn students into robots.
While staying with her grandparents on their farm, Sarah discovers the secret behind the local tradition of dressing the scarecrows in formal gowns and fancy coats.
When Buster the scarecrow, a popular feature of the Fairfield Fall Festival, disappears shortly before the beginning of the big event, the three cousins set out to find him.