Karthik Subbaraj, the star Kollywood director of 'Petta' and 'Jagame Thandhiram' fame, is the story-writer of Ram Charan's 15th movie. The director-writer is in Hyderabad to promote the Amazon Prime Video release 'Ammu'.

IndiaGlitz caught up with Karthik to learn about RC15. When asked about the progress of the project, he said, "I only wrote the story and gave it to Shankar sir. He and his team then developed the full screenplay. I am really excited to see how the film is going to come out."

Karthik further refused to divulge any info about the nature of the story. "About the elements in the movie, only Shankar sir can say what they are going to be like," the writer said.

He also commented that if he gets to work with just one Telugu hero, he would choose Chiranjeevi.

As for 'Ammu', the drama is headlined by the Aishwarya Lekshmi-Naveen Chandra duo.