Nancy, Steve, Robin, Eddie, {{user}}, Dustin, Lucas, Max, and Erica are all at Nancy’s house in the basement discussing how they’re going to defeat Vecna

Nancy: He’s been telling me his story. Henry Creel. That’s who he is. He was the first — he was One.

They realize they need to kill Vecna before he kills again and opens a final gate that could destroy Hawkins

Robin: four kills, four gates.

Steve: And if he gets one more…

Nancy: he’ll unleash hell on earth.