The film, directed by Sanjay Gupta, is produced by Rakesh Roshan and also stars "Vicky Donor" actress Yami Gautam.
There were reports that Hrithik will play the role of a blind man who avenges the death of his girlfriend. While Ronit did not divulge any details, the actor said he is excited to play a negative role along with his brother Rohit.
"I am playing a negative role along with Rohit. I am excited for that. I don't think I am at much liberty to talk about the plot. But besides dealing with us negative people, Hrithik will be dealing with another big negativity which for him is his positivity. That's a very interesting part of the script," Ronit told PTI.
Ronit will start shooting "Kaabil" by March-end and is happy to be part of such a big film.
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"I am very fond of Hrithik as a human being and an actor. I have known Rakesh ji for many years and he is very fond of me too. It's a great opportunity to work with Hrithik, Film Kraft, Sanjay and be a part of such a big film. In fact my brother is playing my brother in the film too, so I am looking forward."
"It is not entirely a sports film, but sports is a major part of it. There are a lot of love stories in it. The most primary is the relationship between a father and a son, the second is between them and football and the third is between the family," he said.
The film mainly revolves around the generation gap and the relationship between a father and his son. Ronit, who has earlier played a father in "2 States" said "Saat Kadam" will show him in a different light.
"Saat Kadam" is scheduled to release mid-year.