What's the Matter?

 is a limited-time main questline released on August 16, 2016, for the SciFi 2016 Event.

End
"While these Alternate Homers are visiting your Springfield, keep sending them to Plunder the Multiverse!"

- System Message.

End
"This story will continue in the second act. For now, keep playing with the PolyVac; get more cool "treasures"!"

- System Message.