Auro (Amitabh Bachchan) is an intelligent and witty 12-year-old boy with an extremely rare genetic defect called progeria. Mentally he is twelve and very normal, but physically he looks five times older. In spite of his condition, Auro is a very happy boy. He lives with his mother Vidya (Vidya Balan) who is a gynecologist. Amol Arte (Abhishek Bachchan) is a young, cold blooded politician. He is out to prove to the world that 'politics' is not a bad word. He is a man with a mission. Auro is Amol's son; however, Vidya conceals this from him. PAA is an emotional father-son relationship with the ailment as the back-drop.  Veteran composer Ilaiyaraaja scored the music. The film was critically acclaimed and a success at the box office , for which Amitabh Bachchan got Filmfare Best Actor Award and Vidya Balan got her first Filmfare Best Actress Award.  In Hindi with English sub-titles.