The first trailer for the fourth season of Stranger Things shows a troubled Eleven learning that she is the key to winning the war against the threat coming from the Upside Down. Oh, and Robert Englund, best known as Freddy Krueger in the Nightmare on Elm Street franchise, is featured, sans eyes.

The trailer, set to Journey’s “Separate Ways” shows the heavy toll fighting demons has taken on the citizens of Harkins, especially Eleven (Millie Bobby Brown), who has lost her powers, but hopefully not for long.

“A war is coming,” Paul Reiser’s Dr. Owens warns Eleven. “I don’t know how else to say this other than just to say it. Without you, we can’t win this war.”

While most of the gang remains in Hawkins, Eleven has moved with Joyce (Winona Ryder), Will and Jonathan (Noah Schnapp and Charlie Heaton) in California, and David Harbour’s character Hopper has also gone a separate way, as he is facing down demogorgons in a Russian internment camp.

The transition to a more horror-heavy season is brought home with the inclusion of Englund’s character, who has an ominous, perhaps villainous presence in the trailer. There’s even a scene where a heavy metal guitarist shreds while standing upon a dark stage of some kind, for reasons known only to the show’s creators.

Englund will be playing Victor Creel, “a disturbed and intimidating man who is imprisoned in a psychiatric hospital for a gruesome murder in the 1950s.”

The official logline for the new series, the first half of which debuts May 27th, reads as follows. “It’s been six months since the Battle of Starcourt, which brought terror and destruction to Hawkins. Struggling with the aftermath, our group of friends are separated for the first time — and navigating the complexities of high school hasn’t made things any easier. In this most vulnerable time, a new and horrifying supernatural threat surfaces, presenting a gruesome mystery that, if solved, might finally put an end to the horrors of the Upside Down.”

Creators Matt and Ross Duffer recently called season four their “Game of Thrones season,” since they’re telling a sprawling story with a large number of characters in different locations and it all adds up to their longest season (nine episodes). They and the network have already decided that the show will end after its fifth season, but haven’t ruled out prequels or sequels to the show.