This episode stars the Gang and the fairy ground ride makers Chris and Terry, who are both girls/
Fred and the girls go on a skydiving ride and the roller ghoster break the controls but leaves behind some hair so it's obviously not a ghost.
Shaggy and Scooby go on another ride where the ghost cuts the cables and they go flying lesson number 1. The gang eventually tells Shaggy and Scooby to walk down a path leading to a payphone and on the way shout out as if they know who the roller ghoster is. The ghost then chases them into a skate park and the've all got gear on. Scooby and the ghost had skates and Shaggy had a skateboard. at the end of the park they have a ramp Shaggy comes out then the ghost followed too closely by Scooby and he jumps onto the ghost and they go flying, Scooby escapes but the ghost crashes into a teddy bear stand and is trapped all that is left to do is the un-masking. It's Terry!!