Heads, Shoulders, Knees, and D'ohs

 is a limited-time questline that was released on October 17, 2018. It is the main questline for the Treehouse of Horror XXIX Promotional. Players had until November 22, 2018, to complete it.

End
"Where are these mysterious Pods coming from? Tune in Sunday on FOX to find out!"

- System Message.