Men in Black III is not the final film in the franchise, according to director Barry Sonnenfeld, but it is the last chapter in the Agent K and Agent J storyline, with this third sequel setting up a possible reboot at Sony.

Barry Sonnenfeld recently spoke with MTV about the future of this sci-fi series, and hinted that we may see more of Josh Brolin as a younger Agent K in the 70s, but the Will Smith and Tommy Lee Jones relationship is completely wrapped up with this latest outing.

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"This is by far the most emotional of the movies. It has a really surprising ending. The fantastic thing about Men in Black III, is that it totally closes out the trilogy, it answers questions that you didn't even know you should be asking, it leaves you emotionally warm and sad and happy, and it could also reboot the franchise. But I can't even begin to tell you how to interpret all of that. [Laughs] But I would say this: If your interpretation is that Men in Black 4 will only star the worm guys and Frank the pug, you are wrong."

Barry Sonnenfeld also clarified rumors that the film was in shambles during production.

"What was reported on this one was that we took a several-months hiatus to work on the script. As it relates to that, that concept was built into the shooting schedule. We wanted the next movie Will Smith was in after a long time where he wasn't in movies to be Men in Black III. We also wanted to shoot in New York, which had a tax incentive that was about to expire. It didn't expire, but we didn't know it wasn't going to expire, because New York state legislature had to vote it in again, and we weren't sure that was going to happen.

So we started the movie with a full script and with a really great first act - but the second and third needed work. We built in a two-month hiatus so we could continue working on the script and not need an eight-week reshoot. So that's what we did. The truth is, the great thing about the movie, is that there was no stress between myself and any of the actors. We all got along very well. You don't ever want a director and a movie star who see two different movies. But we all were working with the same ideas in mind. We knew the characters, we knew the history, and we were very much in sync.

People don't know this, but the end and plot of the first Men In Black was changed after we shot the picture, months and months and months after shooting. We had cut the movie and were ready to mix it and everything. But I took one scene and got a phonetics expert to change what the two aliens were saying - they were speaking English, and we changed it to an alien language, and subtitled what they were saying. That totally changed the plot of the movie. So, we did not have to do that on this movie. We got [the story] right the first time; it just took a long time to get there. The movie is really good, and it looks great. I think it's going to be fantastic in 3-D, too."

To read more about the storyline of Men in Black III: CLICK HERE