Millie Bobby Brown, Finn Wolfhard, Caleb McLaughlin, Gaten Matarazzo and the rest rock out for a world turned upside down in the preview.
The two will appear in "Concrete Cowboys," a movie about Philadelphia's Black cowboy subculture.
Millie Bobby Brown, Finn Wolfhard, Gaten Matarazzo, Caleb McLaughlin, Noah Schnapp and Sadie Sink each hinted at what fans can expect.
It all got very topsy-turvy.
What was that monster in the Season 2 teaser?
Why the 15-year-old feels so connected to '80s-themed roles.
3. There is a blooper reel. 8. The cast is very into the Parks and Rec conspiracy theory. "Go watch 'Parks and Recreation