The first full trailer for season 3 dropped in March, mostly focusing on interpersonal relationships and an unnamed new threat to the town. The gang is still together: Dustin (Gaten Matarazzo), Mike (Finn Wolfhard), Will, Lucas (Caleb McLaughlin), Max (Sadie Sink), and Eleven. Mike's sister Nancy (Natalia Dyer) is still dating Will's older brother Jonathon (Charlie Heaton). David Harbour is back as Chief Jim Hopper after his Hellboy excursion, while Will's mother, Joyce (Wynona Ryder) is struggling to cope with the great personal loss she suffered last season
Unlike prior seasons, which took place in the fall, this third installment is set in the summer against the backdrop of the opening of a new supermall, courtesy of new Hawkins Mayor Kline (Cary Elwes). Subsequent teasers focused on lighter moments, like the growing bond between Dustin and Nancy's ex, Steve (Joe Keery), and a rather unsettling poolside clip, showing the collective moms of Hawkins shamelessly ogling lifeguard Billy (Dacre Montgomery), Max's bad boy older brother. Season 3 of Stranger Things drops on Netflix July 4, 2019.