Here’s what you need to know about the return of ‘Stranger Things’

The nostalgia-heavy, smallscreen blockbuster “Stranger Things” returns to Netflix with a new season on Oct. 27 — just in time for a pre-Halloween weekend binge session.

Netflix unveiled the trailer for the upcoming season of the breakout hit at ComicCon, and it’s chock-full of 1980s pop cultural references. The kids are dressed as the Ghostbusters for Halloween. They’re playing Dragon’s Lair at the arcade. There’s a Reagan/Bush ‘84 campaign yard sign. Vincent Price’s voiceover on Michael Jackson’s “Thriller” narrates the whole thing.

But the big takeaway is that Eleven is back. The mysterious girl with mysterious powers shows up at the end of the teaser, and it looks as if she’s found a way to get out of the Upside Down.

The iconic character is played by Millie Bobby Brown, who is up for a best supporting actress Emmy for the role. Eleven will be a full-fledged character in the second season, the show’s creators told USA Today. “Her role is substantial and really satisfying,” executive producer Shawn Levy said.

The sci-fi thriller miniseries began in fictional Hawkins, Indiana, in 1983, with the disappearance of a boy, Will, after a serious Dungeons & Dragons session. There are some supernatural forces at play, and we follow Will’s mother, Joyce Byers (Winona Ryder), the police chief and the boy’s friends - helped by Eleven - as they search for Will.

This new season begins in 1984, and it appears the main plotline is that not all is well with Will. The last time we saw Noah Schnapp’s character, he was coughing up weird sluglike tentacles but pretending that everything was cool in front of his family.

Well, guess what? Everything is definitely not cool. He’s seeing giant, scary creatures when he should be seeing video games. “I saw something,” he says. Concerned mom Joyce is still very much concerned. “What is it?” she asks.

“I don’t know,” Will says with giant tears welling up in his eyes. “I felt it everywhere.”