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.
5. Have they gone back and watched The Goonies? "We went back and watched horror/thriller films like Poltergeist and Nightmare