The filming of 'Stranger Things' season four was postponed for a few years, but it's finally, finally back!

'Stranger Things' depicts the surreal events that occur in the fictional town of Hawkins, Indiana.

The appearance of a girl with psychokinetic abilities named Eleven (Millie Bobby Brown) kicks things into gear.

So too does an alternate dimension, "the Upside Down", as it tries to break through to the real world.

The sci-fi series has proven a hit since its first season dropped on Netflix back in 2016.

We've grown to love those crazy kids Mike (Finn Wolfhard), Dustin (Gaten Matarazzo), Lucas (Caleb McLaughlin) and Will (Noah Schnapp); as well as their older counterparts Nancy (Natalia Dyer), Jonathon (Charlie Heaton) and Steve (Joe Keery).

Will Joyce (Winona Ryder) and Hopper (David Harbour) ever figure out that they're meant to be together??

With the first part of season four hitting Netflix this May, we thought we'd take a look back at the series so far and make a quiz for all you die-hards (us included) out there.

No googling or cheating is allowed and be sure to let us know how you do in the Facebook comments.

Check out more TV, movies and music quizzes here.