Actor Hrithik Roshan has locked the script of the fourth part of his superhero franchise, Krrish. A source tells us that the script has been written by the actor’s father, filmmaker Rakesh Roshan, and modifications were made after Hrithik went through it.

“He (Hrithik) wanted to be super sure about the story as they are reviving the franchise after a long time and don’t want to get it wrong. He went through the script and introduced some changes. The script is now locked,” an insider says, adding, “He is ready to start shooting in February or March next year.”

The actor, we have learnt, has almost wrapped up the shoot of Siddharth Anand’s Fighter and is in prep mode for Krrish 4. He is expected to undergo a fitness transformation for the role.

Meanwhile, the makers are in search of an international destination to shoot. “They might revisit Singapore for some important sequences. But the focus is on shooting in a place where they get the best subsidy,” says the source.

The franchise kicked off with Koi... Mil Gaya in 2003 that also starred Preity G Zinta and Rekha. The makers might reach out to actor Priyanka Chopra Jonas, who was seen in the last two instalments of the franchise. “There is no chance for Zinta to return, but the makers want Priyanka to revisit her role and are planning to reach out to her soon to check about her interest. The team is hoping to seal the deal with her,” the insider shares.