When Lisa becomes scared at the Krustyland Halloween Horror Night, Homer is forced to take down his Everscream Terrors decorations. Halloween pop-up employees seek vengeance on Homer for causing them to lose their jobs, and rob his house while Homer and Lisa hide out in the attic. Homer and Lisa light up their stored holiday decorations to attract attention and stand up to the intruders.

Lisa befriends Harper, a new kid at school who happens to be super-rich. Then, Homer befriends Harper's dad and is able to enjoy the perks of Lisa having a rich friend, as well. But Lisa decides that Harper is a bully and moves to end the friendship, which prompts Homer to try and smooth things over so he can continue to enjoy the good life.