'PAA' is a movie about rare father son relationship. Directed by R. Balki and produced by AB Corp,Reliance Big Pictures and Sunil Manchanda. The roles are played by a father and son but roles reversed, as in real life Abhishek is Big B’s son, but here Amitabh Bachchan is playing the role of Abhishek’s son. It is the first time that AB is doing such a big experiment with his look in his lifetime. He is playing the role of mentally challenged and suffering from a disease named 'Progeria'. In two ways a very challenging role to play, firstly real life father is playing role of his own son’s son and secondly to play a mentally challenge boy’s role is really very tough for a aged man who is in his 60’s.

Auro (Amitabh Bachchan) is an intelligent, witty 13 yr old boy with an extremely rare genetic defect that causes accelerated ageing. He suffers from a progeria like syndrome. Mentally he is 13, very normal, but physically he looks 5 times older. In spite of his condition, Auro is a very happy boy.

Abhishek Bachchan (Amol Arte) and Vidya Balan (Vidya) are playing the lead as father and mother of Amitabh Bachchan, Abhishek who is playing as a young, progressive and a full of ideals, politician. Vidya Balan plays the role of a gynaecologist. Paresh Rawal also playing in an important role as Abhishek Bachan's father in this Movie.

Producer: Sunil Manchanda, AB Corp
Director: R. Balki
Music: Ilayya Raja
Writer: R. Balki
Lyrics: Swanand Kirkire