Star Trek Into Darkness is shaping up to be one of the summer's biggest blockbusters. Director J.J. Abrams recently spoke about his highly-anticipated sequel, and while he wouldn't divulge any details about the plot, he did reveal the follow-up will be a deeper film.

"There's nothing worse for me than reading what the theme of a book is or a movie and then reading it and being like: that's the theme. The theme is you feel it. I do think that by default this a deeper movie. It's certainly a bigger movie because the first one was kind of the origin story which is great because it's so easy. You just introduce people and yet now they know each other so it has to go deeper."
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With a large ensemble cast, the filmmaker revealed it wasn't easy finding ways to incorporate all of these characters into the story.

"Honestly, it's never easier the next time, ever, for anything. You always think, 'Oh, I've done that, it'll be easier the next time.' No, it's harder the next time. But it's important that every character need to be in the story, otherwise they shouldn't be. But I wouldn't say it was easier."

Last month, it was confirmed that Benedict Cumberbatch's mysterious character is named John Harrison, although many still think it is an alias for Khan. The director reveals that the actor is 'unbelievable' in the sequel, and he can't wait for fans to see the movie.

"I just can't wait for people to see the movie. Benedict is unbelievable. It's a tall order, coming into that movie, because the crew of the Enterprise, that cast is so damn good and they're wonderful to work with and they're all good hearts. So, to come into that group, as he did, as Alice Eve did and as Peter Weller did, and be one of the family was something that I was doubtful could happen. And he completely did it. I not only love him in the movie, but I love him, as a human being. He's an amazing guy. I can't wait for people to see the movie and experience what he's done."

When asked about a scene in the trailer that appeared to be a callback to Star Trek II: The Wrath of Khan, the director wouldn't reveal specifics, but said fans will understand the context when they see the movie.

"Well, I would say that you've got to see the movie to see. I don't want to give away what that is, but we've all seen Wrath of Khan. With one or two exceptions, we're not idiots. We are aware of the movie. I love Wrath of Khan."

While Star Trek Into Darkness doesn't hit theaters for five more months, some fans are already wondering about Star Trek 3. The filmmaker revealed that there isn't a script in place yet, although they do have ideas for the follow-up.

"No, sir, not yet. I'm sure that the studio would love that to be a possibility but it's up to the audience to decide if there needs to be one...There are things we've talked about but there's no script or anything, it's just ideas."