Nancy is invited to the Jersey shore to investigate a series of mishaps that have occurred at the Captain's Cove Amusement Park. The missing lead horse was stolen from the carousel and now, the roller coaster has lost power resulting in a serious accident. Although the park is closed until the insurance company can investigate the accident, several workers still remain on site. Those workers include the park's bookkeeper, Joy Trent; the chief engineer, Ingrid Corey; Harlan Bishop, the security officer and Elliot Chen, the park's art director. Nancy starts investigating and learns about the reclusive genius, Rolfe Kessler, who carved the carousel in his long forgotten hidden workshop. Nancy can only discover the truth behind the haunted carousel after solving a series of puzzles and avoiding several deadly traps.