Just like the Will Smith song goes, "Here come the Men In Black."

But with "Men In Black: International" (in theaters Friday), there are some pretty big franchise changes for the top-secret, black suit-wearing organization charged with monitoring the alien population on Earth.

For starters, there's no Smith as the theme-song singing Agent J, who starred with grumpy Agent K (Tommy Lee Jones) in 1997's "Men In Black," 2002's "Men In Black II" and 2012's "Men In Black 3."

In the spinoff, new agents are played by Chris Hemsworth (the dishy Agent H) and Tessa Thompson (agency newcomer Agent M).

What else has changed in the reboot? You have questions, we have answers.

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So where are Will Smith and Tommy Lee Jones?

Smith traded in the dark glasses for blue CGI playing the Genie in this summer's live-action "Aladdin." The actor and the filmmakers agreed at the end of the third movie that his character's journey had come to an emotional end, producer Laurie MacDonald told Variety.

They went in a different direction in the spinoff, with the action unfolding in international locales (no longer New York City) and with new agents. The only carryover is Emma Thompson, who reprises her role as Agent O.

Producers didn't even seek out Smith and Jones for cameo appearances.

"They both loom so large, it didn't feel right," MacDonald said. "It seemed like it might be that taste that made you think, 'Why aren't they here?' "

However, if you look carefully at Agent High T's (Liam Neeson) office, there are pictures of both agents in the background.

Wait. Agent H?

Hemsworth and Thompson have already proven their chemistry in the Marvel Cinematic Universe starting with "Thor: Ragnarok," in which Thompson plays the warrior Valkyrie. By "Avengers: Endgame," Hemsworth's Thor has a dad bod and is experiencing severe burnout, while Valkyrie steps up to hero prominence. This theme continues in "MIB: International" with Hemsworth's Agent H flaming out in his once-bright career, often comedically: He has an affair with a three-armed alien and debriefs a key alien source on a disco dance floor.

Thompson's Agent M is the agency's rising star, who takes the job seriously. She only "butt dances" at the club from a seated position, while looking for baddies.

How does 'Men In Black' handle the fact that there are, um, women in black?

Agent O does attempt to tell newcomer M why the agency continues to be referred to as "Men In Black," when there are clearly a number of female agents. "I've had the conversation, they can't seem to let it go. It's a process," she says.

While that explanation isn't satisfying, it does allow for the internationally known Men in Black to remain the same, a key reason for the reboot.

Are there aliens and gadgets?

Fear not, "Men In Black: International" excels at bringing in freaky aliens (one doubles as a man's beard) and adorable aliens alike. Kumail Nanjiani voices Pawny, a mini-sidekick alien who would make an Ewok squirm over the gratuitous cuteness.

Rebecca Ferguson shines as Riza, the three-armed weapons dealer alien who can't handle Agent H breaking up with her. There's the full complement of blasters and the good ol' Neuralyzer, a pen-like device that emits a beam wiping the memories of those who’ve seen alien activity.

So how will this go down?

While critics aren't loving "Men In Black: International," which has just 32% positive reviews on Rotten Tomatoes, the film looks like it will be a contender in a slow weekend at the box office. Deadline projects a $30 million opening and up to $85 million overseas. Chalk it up to the power title and the pulling power of two Marvel stars who have put traveled the world to promote the film.

" 'Men In Black' is a brand name that still carries a lot of weight," says Paul Dergarabedian, senior box-office analyst for Comscore. "Even without Will Smith, there will be interest in and curiosity for the film in its opening weekend."