After Joe builds a home theatre system, Peter tries to build a multiplex in his backyard just out of spite. While digging, Peter finds the skull of a dead Native American buried in the backyard. This resembles the haunted skeleton seen in "Ready, Willing, and Disabled". Brian urges him to put the skull back, but Peter decides to use it as a novelty (peeing in it, playing with it, etc).
That night the Griffins start experiencing strange paranormal activity, such as Stewie talking to the TV static, the chairs and refrigerator being stacked upside down on the kitchen table, and Chris getting attacked by an evil tree before being saved by Herbert in the same fashion as Gandalf saves the rest of the Fellowship from the Balrog in The Lord of the Rings: The Fellowship of the Ring. Lois is in denial (and Peter is oblivious) of the events that are happening, until Stewie gets sucked into his closet and disappears. "You shall not pass!"To find Stewie, the Griffins hire a spiritual medium to contact the other side, and learn that the entrance to spirit world is Stewie's closet, while the exit is Meg's ass. After they eventually rescue Stewie, the spirits ravage the Griffin house and suck it into their world. As the Griffins drive off, Peter dumps the native American skull in a garbage can.
Now homeless, Peter and Lois try and find a way to get their house back, and learn the native American skull has to be put back in its resting place. After searching through the city dump, a garbage man tells them that the skull would be in the human remains bin, but it was cleaned out by Carrot Top for things to use as props. They go to Carrot Top's mansion and, after a chase through a hall of mirrors, they retrieve the skull and rebury it, thus getting back their house and life returning to normal.