Poly Roshan

With the release of the trailer we got more info for theories

Who is Kiara

Kiara's characther is an Indian Air Force officer, her name is Kavya Luthra which probably means she is a relative of Col. Luthra (most of us think she is his daughter) and she was romantically involved with Kabir in the past, Bollywood Hungama confirmed the romantic scenes between Kavya and Kabir are part of a flashback.

And as we know now by Kabir's monologue in the trailer he sacrificed this relationship to be focused on his work as an agent. I initially thought she was a dead lover but she seems to be pretty much alive.

2. Who is NTR Jr.

NTR's characther is not a villain (i cannot stress this enough), as his monologue reveals, Vikram is an agent working for the best interest of India, he goes after Kabir probably cause he was given the mission, Kabir went rogue and the government considers him to be dangerous since the first movie.

Now, the next part is not my theory but i totally agree with it, apparently Vikram would be Jim's teammate (Jim is Pathaan's villain) because in most of his scenes he seems to be fighthing some Somalian terrorists, maybe trying to rescue Jim but arrived late.

3. So what is the movie about?

I think Kabir is on a mission planned with Col. Luthra, the mission goes wrong, Col. Luthra apparently dies (i was in dennial but we know he got a replacement which is Anil Kapoor's character) and Kabir gets blamed, gov. assigns Vikram to stop/kill Kabir.

Vikram probaly uses Ruhi to make Kabir come out of wherever he is hiding.

Kavya also goes after him to avenge her relatives' death and you can see it hurts her to fight Kabir

Props to Kiara for the expressions

At some point Kabir and Vikram clear what actually happened and start working together against the actual villain (probably Bobby Deol)

We get this Kabir who looks happy and without gray hair and small beard

We also get this one with a big beard and the hair is a bit different

And then we get this one with the gray hair and small beard that we know