“We tried as much as possible to answer all the questions as it relates to the characters and mythology of Hawkins in the Upside Down. We’re really closing the door and all that,” Matt Duffer explained. “And the spinoff, it relates in some ways, but it really is a completely different story and a completely different location with completely different actors and characters. So it’s its own. It’s really its own entity."

As for what the Stranger Things spinoff will be about, that’s another mystery, but the Duffer brothers have said that Finn Wolfhard (who plays Mike Wheeler) is the only person who has correctly guessed what it will be about. Wolfhard later said the spinoff would have Twin Peaks vibes.

Stranger Things: Duffer brothers tease “completely different” spinoff series

The Duffers Are Headed to Paramount for this Spinoff.