Ten-year-old Freddy Pesterfield is certain his aunt's creaky old farmhouse in TN is haunted, and it's not long before he begins sleepwalking to the nearby family cemetery. Freddy desperately searches for a way to keep from waking in the graveyard, but he cannot stop a vengeful ghost from luring him there. With the help of his wary cousin and his superstitious friend, Freddy looks for remedies to get rid of the ghost named Tump. Can Freddy unearth the mystery of Tump's death before