Marvel has another hit on its hands with Spider-Man: Homecoming. Critics and audiences love it, and it’s set to exceed the $80 million it was expected to bring in during its opening weekend in the US. During the marketing campaign, people complained that the trailers appeared to reveal too much about the plot, but there were still plenty of surprises when the movie hit theaters.

During a recent interview with Cinema Blend, Kevin Feige talked about one of those surprises and explained why it was necessary. So check it out below, if you don’t mind a spoiler!

The trailers showed quite a bit of action, but Spider-Man: Homecoming is actually about a high school student who happens to have superpowers. Unlike previous films, Homecoming spends plenty of time on this aspect of the hero's life and the repercussions of his superheroic deeds.

Unexpectedly, the movie ends with Aunt May learning what Peter has been doing with his free time. The film ends before May can turn it R-rated, so to speak.

Feige revealed that May’s discovery of Peter’s secret identity is based on a story in the comics that he’d always wanted to adapt for the big screen:

J. Michael Straczynski did an issue when he was doing his run of Spidey many years ago where she discovered the secret. I think it was in the laundry or something, and they had a sit-down scene. And probably going back to Spider-Man 2, I would sort of carry that issue around and go, “We should do this someday, we should do this someday.” And it was great luck that it hadn't been done yet. That was always part of the plan.

As it turns out, the Marvel Cinematic Universe is the best place to do that, since the heroes don't actually have secret identities. It all started with the first Iron Man, which ended with Tony Stark telling the press that he was Iron Man.

But there’s more to this. Feige added that this final reveal will push the sequel into unknown territory and force the studio to do something we haven't seen in previous films. This has also been on Feige’s mind all along:

And very much like our instinct to say, “Let's have Tony Stark say ‘I'm Iron Man’ at the end.” Well, what does that mean for the next movie? I don't know, but it will force us to do something unique. We did not want to do the secret identity thing at that point in the MCU. And now, same thing. The dynamic now is forced to be something fresh and something unique going forward.

We can't wait to see what happens next, and how Aunt May deals with the knowledge that her apparently fragile nephew is a superhero.