Thalai Nagaram is a 2006 Indian Tamil-language action crime film written and directed by Suraj and produced by V. Ravichandran. The film stars Sundar C in his lead acting debut and Jyothirmayi, while Vadivelu, Prakash Raj, Judo. K. K. Rathnam, K. S. Ravikumar, and Bose Venkat play supporting roles. This film was a low-budget production but enjoyed huge success. The soundtrack, composed by D. Imman, was a great hit, and the song "Yedho Ninaikiren" charted at the top position for a week. The film also has cinematography by K. S. Selvaraj and editing by Mu. Kasi Viswanath.

Plot

Subramaniam alias Right (Sundar C) is a rowdy in North Chennai. He runs a separate gang and also works as a sidekick and right-hand man to a big time Muslim don named Qaasim Bhai (Judo. K. K. Rathnam) who resides in North Chennai. Qaasim Bhai uses Right and his gang as professional killers whenever required. ACP Ravikumar (K. S. Ravikumar) believes in his own type of law by eliminating criminals instead of wasting time by the court and other procedures. Divya (Jyothimayi) a student, surprisingly enters into Right's life and takes shelter in his house. However, things change after she enters his life; both of them fall in love. At a situation, there arises a clash between Right and Qaasim Bhai. Right's friend Balu (Bose Venkat) kills Qaasim Bhai's son Nassir (Vikas Rishi) for ordering a trucker who rams a convoy which killed innocent children instead of only killing the intended target. Unfortunately, Balu is killed by Qaasim Bhai for killing Nassir. After seeing Balu's death, Right decides to change his lifestyle.