Alicia and Greg go out with their friends on Halloween night, following a rumor about a house in the forest with exceptional candy. The bogeyman living there turns all their friends to stone on arrival. To free them, the two must enter the world of the dead — traveling through cemeteries, haunted houses, and laboratories. The world of the dead permits only one visitor at a time, so Alicia and Greg must alternate turns. Goblin and Jack O'Lantern teach them magic along the way. The Mad Scientist's laboratory is the final destination.