For those in need of a little memory refresh, season three culminated in the catastrophic showdown known as the Battle of Starcourt.
Our faves Eleven (Millie Bobby Brown), Mike (Finn Wolfhard), Will (Noah Schnapp), Hopper, (David Harbour), Joyce (Winona Ryder) and the rest of the gang battled it out, and successfully shut the gate to the Upside Down.
But sadly their victory came at a massive cost, as Hopper and Billy (Dacre Montgomery) appeared to sacrifice themselves in order to beat the dreaded Mind Flayer – although we might not have seen the end of them just yet.
Although the plot for season four is set six months after these events, the first eight minutes of episode one in fact takes us all the way back to 1979 for a terrifying sequence involving none other than the first run’s antagonist, Dr Martin Brenner (Matthew Modine).
In the scene, the Hawkins National Laboratory researcher is seen going about his morning before heading into the federal complex to perform some more MK-Ultra-style experiments on his patients.
And this is where the plot twist comes in – as you’ll see in the footage, Brenner’s experiments culminate in a bloody massacre caused by none other than a young Eleven.
Safe to say the fans are going wild over the revelation, with one writing: “I did NOT expect that!! This season is gonna be something else for sure.”
“I don't usually get scared easily, but after seeing what Stranger Things has become, I'm truly terrified to see what'll happen next,” said another. “This was amazing.”
A third wrote: “This looks like the best season yet. Dude, she just killed everybody??? Backstory, everything is just amazing.”
“Such a cliffhanger lol,” wrote a fourth, adding: “I knew it was Eleven, I didn't know she could do such things and I also love the fact that the scientist actually looked sad about 10's death.”
Yep, fans of the sci-fi series have a lot to be excited about, especially since we’re just days away from the first half of season four’s release.
As for the rest of the plot, Netflix’s official synopsis reads: “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.”
Volume 1 of Stranger Things season four premieres on Netflix on 27 May, while volume 2 is set for release on 1 July - get it in the diary, folks.
Featured Image Credit: Netflix