Billa , film released in 1980. The movie was produced by K.Balaji and directed by R.Krishnamurthy. The film stars Rajnikanth, Balaji, Thengaai Srinivasan, Manorama , Sripriya and Major Sundarajan.

Billa (Rajnikanth) is the leader of an underworld gang. The DSP is tracking down Billa and in one of their confrontations the DSP wounds Billa, resulting in his death. The DSP then secretly holds a burying of Billa. After which the DSP remembers a person who looks like Billa, he then tracks that person down. The DSP requests Raju to impersonates Billa so that the DSP can take down the rest of Billa's gang, Raju requests that the DSP promises him that he will give a proper education to the children that he is looking after. But in an unexpected turn of events the DSP dies. The DSP is the only one who knows the truth about our impersonator who now finds himself in a life-threatening situation - hunted by both the cops and the real Billa's henchmen and to make matters worse, he then finds out that Interpol Officer is a crook and has taken the place of the real person. He is the one responsible for the DSP's murder. It's now a race to retrieve a the DSP's diary in which the DSP has documented his substitution of the real Billa.