Aag (English: Fire) is a 1948 Indian Hindi language musical drama film which is produced, directed by and stars Raj Kapoor.

The story is about a boy, named Kewal (played by Shashi Kapoor), who is obsessed with theatre but is descended from a family of lawyers.

He again plans to stage a play, but the second Nimmi also deserts him because her parents have decided to marry her off, to a man who lives in England, on the day of the premiere.

This forces him to a reckoning that he has no real interest in becoming a lawyer and would like to pursue his childhood dream of owning his theatre company to write, direct, and produce plays.

He argues with his father and is asked to leave the house and despite his mother's protestations, decides to chart his path in life and pursue his dreams.

During this act, of what Kewal perceives as a sacrifice to save his friendship with Rajan, the stage catches fire and the whole production company is burnt to the ground and he is disfigured.

The camera cuts back to the present, the wedding night, where Kewal is telling Sudha that his childhood Nimmi understood him and only she will accept him for who he is.