The citizens of the town have appealed to Dr. Harvey, a famous ghost specialist, to stop the famous ghostly trio--Stretch, Stinkie, and Fatso--that turns adults into zombies and frightens children. Unfortunately, the doctor himself has now turned into a zombie. Casper has to guide and protect Dr. Harvey so that he can take care of himself and save the town from this evil influence. The game features six levels with one map and 60 game screens each. Use any of the six possible transformations to drive back the enemy and avoid the traps, plus collect such items as flasks, glue buckets, and keys.