A 15 episode serial in which boy detectives Frank and Joe Hardy try to solve the mystery of a haunted farm where the farmer has died and left no one to care for his livestock. A ghost assists them to prevent the acceptance of a false inheritance claim.

When an opportunity comes to help prove the new kid in town as innocent and find the long lost Applegate treasure, they jump on it. We follow the boys' case as they discover new twists and turns in the new case and in the mystery of the 10 year missing treasure.