Bored with all the monsters turning out to be bad guys in costumes and thoroughly fed up with Velma's cynicism, especially her "No such thing as ghosts" speech, Daphne arranges a trip to New Orleans, Louisiana, in the hopes it'll get Velma to be more open minded.
But when every monster turns out to be a fake, Daphne is ready to give up, until she happens to meet a woman named Lena, who works as a chef in a real haunted house.
Soon the gang arrives at the mysterious Moonscar Island, where thousands of people have disappeared. Upon arrival, strange things begin to happen and while Velma brushes it off as being a logical explanation, it becomes clear that there may not be a logical explanation this time.
The gang has tangled with spooks before, but will they be ready to face monsters that aren't bad guys in costumes.
