While helping Gladys Glendower fix up the Moonlight Drive-in, Wishbone and his friends try to discover who is responsible for the series of mysterious fires that threaten to destroy the old theater.
Wishbone senses that someone is up to no good when he, Joe Talbot, and their friends take a ride on a train that was used to smuggle money and other valuables in the 1930s.
Wishbone and his friends try to find out who is threatening to destroy the exhibit of a newly-discovered dinosaur at the Oakdale College Museum of Natural History.
After witnessing an eerie glow in the sky, Wishbone begins to worry about aliens landing on Earth, especially when he hears a strange humming noise in the neighborhood.
Wishbone, David, Joe, and Sam rush to find the real culprit when David is accused by the FBI of using his computer skills to steal a huge sum of money.
Joe Talbot, filling in at "The Oakdale Chronicle" when the entire staff comes down with the flu, calls on Wishbone for help when a red-hot case breaks right under his nose.
Wishbone, Joe, and their friends are helping Gladys Glendower fix up the old Moonlight Drive-in but the job gets tougher when mysterious fires threaten to destroy the drive-in.