The much-awaited movie Ponniyin Selvan: I directed by Mani Ratnam, will hit screens on the September 30. The story is based on Kalki Krishnamurthy's 50's historical novel of the same name, chronicling the rise of the Chola dynasty. NDTV's Sam Daniel caught up with three stars Trisha, Karthi and Jayam Ravi on their preparation and challenges. The stars said that they hope the film joins the big league of Baahubali and other recent blockbusters from the south.