Paa (2009)

Auro (Amitabh Bachchan) is an intelligent, witty 13-year-old boy with an extremely rare genetic defect, a Progeria-like syndrome that causes accelerated aging. Mentally he is 13, a typical young boy, 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), a gynecologist. His father, Amol Arte (Abhishek Bachchan), is a progressive young idealistic politician out to prove to the world that 'politics' is not a bad word. He is a man with a mission: to help his son.