Stranger Things fans are hyped for the premiere of the hotly anticipated series finale on New Year’s Eve: they’ll either be glued to their TVs or heading out to watch it in a bona fide theater. Netflix has dropped one last trailer for the finale—not that it really needs to do anything more to boost anticipation.

(Some spoilers for Vols. 1 and 2 below but no major Vol. 2 reveals.)

As previously reported, in Vol. 1, we found Hawkins under military occupation and Vecna targeting a new group of young children in his human form under the pseudonym “Mr. Whatsit” (a nod to A Wrinkle in Time). He kidnapped Holly Wheeler and took her to the Upside Down, where she found an ally in Max, still in a coma, but with her consciousness hiding in one of Vecna’s old memories. Dustin was struggling to process his grief over losing Eddie Munson in S4, causing a rift with Steve. The rest of the gang was devoted to stockpiling supplies and helping Eleven and Hopper track down Vecna in the Upside Down. They found Kali/Eight, Eleven’s psychic “sister” instead, being held captive in a military laboratory.

Things came to a head at the military base when Vecna’s demagorgons attacked to take 11 more children, wiping out most of the soldiers in record time. The big reveal was that, as a result of being kidnapped by Vecna in S1, Will has his own supernatural powers because of his ties to Vecna. He can tap into Vecna’s hive mind and manipulate those powers for his own purposes. He used those newfound powers to save his friends from the demagorgons.