Director and screenwriter Nag Ashwin is all set to make a biopic on south Indian cinema legend Savithri. Keerthy Suresh will play the main role, and Dulquer Salman will play Gemini Ganesan. The film will be titled 'Nadigaiyar Thilagam' in Tamil and 'Mahanati' in Telugu. It will also feature Samantha in a very important character of a journalist, and the entire story unfolds through her eyes.Vijay Devarakonda has been roped in to play Sam’s love interest. The young Vijay won hearts with his role in the sleeper hit Telugu film ‘Pellichoopulu’.