Smart City Dweller) is a 2015 Tamil language action thriller film directed by Rajeev Prasad, a former associate of Suresh Krissna.
A family lost their jewels and money arranged for their daughter's marriage, and it was recovered from one of their co-auto drivers Kumar (Kaali Venkat) The movie starts with a gangster and his friend getting murdered by 2 paid goons when they came to shave their heads (a ritual) with all their fellow goons.
The killers are getting their next assignment in City to kill 4 (S.I.Ratnam - a Police Inspector, Shiva - an auditor, a stage koothu actor named Theerthagiri and another one).
The paid goons who arrived at City got their ride in Dheena's auto to reach their spot to kill the cop (S.I Ratnam).
So he gives the lift to the goons, but on the way, he calls his friend Dheena, who is now in police's custody and informs him about the killing and his current situation.
Dheena, who escaped from the cop, travels to all the spots is witnessing and hearing the conversations on how all the evidence are strongly against him.
Before he reaches to save Theerthagiri, the goons kill him as well before Dheena enters the back side of the stage.
As usual, Dheena escapes from cop, and while recollecting the morning event, he realizes that the 4th person who was in the conversation with these 3 who were killed so far is Janani.
[1] Rajaji, who was last seen in Moodar Koodam, was cast as the director Prasad felt that his look prevented the audience from figuring act the former's next move.