The teaser makes it clear that the familiar mix of 1980s nostalgia, eerie suspense, and mysterious happenings will remain at the heart of the story. Neon visuals, retro styling, and an unsettling atmosphere all hint that the Upside Down still has plenty of secrets left to reveal.

Netflix is previewing "Stranger Things: Tales from '85." The streamer released a trailer Monday that shows the animated characters facing monsters.