The first look at Netflix’s final season behind-the-scenes footage is not trying to sell you spectacle. It is selling something simpler and harder to fake: a cast that is genuinely overwhelmed by the fact that this chapter is over.
In the trailer for One Last Adventure: The Making of Stranger Things 5, you see tears at table reads, emotional pauses on set, and Millie Bobby Brown voicing what a lot of fans are feeling: “I’m not ready to let go.”

This is what a real goodbye looks like
Stranger Things is the rare hit where the public watched the actors grow up in real time. That creates a different kind of ending. The emotions are not only about story closure. They are about finishing a job that has defined people’s lives for almost a decade.
That is why the footage lands. It is not “press tour emotional.” It is end-of-the-road emotional. Multiple outlets note the trailer shows cast members getting teary-eyed as the final season comes together.
Millie Bobby Brown’s line cuts straight to the point
Brown’s “I’m not ready to let go” is the quote that anchors the whole preview, because it is not complicated. It is not wrapped in PR language. It is the blunt truth of ending something that started when she was a kid and ended when she was an adult.
And it fits the tone Netflix is pushing: this is less about monsters and more about the people who carried the series for years.
The creators are saying the same thing in a different way
The trailer also includes a line from Matt Duffer that basically sums up the show’s priorities: the audience cares most about the characters. That is the framing being used to explain why the ending was so hard, and why so much effort went into getting the emotional landing right.
In other words, the tears are not a gimmick. They are the byproduct of trying to finish a story that people are attached to for character reasons, not just plot reasons.
Why fans are reacting so strongly
A lot of shows end. Very few end with a sense of shared history like this.
People are attached to Stranger Things because it feels like a long friendship that survived chaos, not just a sci-fi horror plot. So seeing the cast break down hits a nerve, because it confirms what viewers already suspect: this ending is personal for everyone involved.
The only documentary detail that actually matters here
One Last Adventure: The Making of Stranger Things 5 is a Netflix behind-the-scenes film that premieres Jan. 12, 2026.
That is it. The rest is noise.
The reason people will watch is not that they need more lore. It is because they want to see how the cast and creators handled the final goodbye when the cameras were not rolling for the show itself.

