Teenagers Augie, Skip and April released a 200-year-old ghost named Jonathan "Mudsy" Muddlemore, along with his ghostly cat, Boo, from a grandfather clock when one of them set the clock's hands to midnight. Mudsy and Boo joined the teens and their dog in a dune buggy called the Looney Duney, solving mysteries in the manner of Scooby-Doo, Where Are You!. Soon enough, the series began to develop it's own identity by having the characters meet actual criminals instead of bad guys in masks and most episodes would also have morals in it. In the comics, the characters encountered other ghosts besides Mudsy and Boo.