Saif, who is filming the climax of the movie in Delhi, says his character is very desi and battles a problem which is central to India and Asian subcontinent.
His Agent Vinod, directed by Sriram Raghavan, is out to solve a nuclear problem, an issue which is in news following the situation in Japan.
"Raghavan and I were trying to find a proper story for this film and we picked up the nuclear issue. It is quite relevant today but at the same time a very engaging adventure.
We also searched about the repercussions of a nuclear crisis.
A film like Agent Vinod needs a problem like that," Saif told PTI.
The 40-year-old actor, however, is quick to brush aside comparison to 007 movies.
"Agent Vinod is no James Bond. 007 is very British and there was a psychology behind the character. He was the representative of capitalism against communist Russia but it is no longer relevant where as Agent Vinod is a special forces kind of guy and very Indian."
It is the second home production for Saif after `Love Aaj Kal` and he has gone all-out to make it big.
"We have not made a film like this in a while and I wanted to do it properly. The genre has been popular in the past but these kind of films were a bit tacky. The look of the film had to be right so we have worked really hard on the pre-production."
It is Saif`s third pairing with real-life girlfriend Kareena after the not-so-good response to `Tashan` and `Kurbaan` but the actor is confident that it will work. Saif feels that the intense focus on their personal life shifts the focus from the movie, which at times is not good.
"It is important to have a tight script and a good role.
Kareena is perfect for this role. I can`t imagine anyone else.
I think we both will be great in this movie. Chemistry is in script, directors create it in right moments. Luckily, Agent Vinod has those moments but people will forget Saif and Kareena once they see the film."
After `Agent Vinod`, Saif is reuniting with `Being Cyrus` director Homi Adajania for a love story, which will see him opposite Deepika Padukone, his co-star from `Love Aaj Kal`.
"It is a love story and very real. Deepika is there and Imtiaz has written the script and has given us some great dialogues. It is a good mix," says Saif.
Turning producer has been "good fun" for the actor and he is happy to have control and creative freedom but right now Saif is busy doing housekeeping there.
"It is great being actor. There are other people to do things but as a producer you need to take care of little things. Right now I am doing a bit of housekeeping. I want my crew to feel at home so I am trying to make things more comfortable for them," he adds.
Saif has already planned his next home production and is in the process of buying the rights of a European comic book to turn it on big screen.