[2] Ashok Metha, a senior politician, is enraged when a junior Roopavathi is made the Prime Minister of India.

Meanwhile, a high-profile officer is killed in Delhi by a professional killer, Robin and Vidya witnesses the murder.

Vidya arrives in Chennai for a dance event and falls in love with Subash, an honest IPS officer who is mourning the loss of his beloved sister.

He manages to impress Roopavathi by arresting Vannai Varathan, an MP from her party, for creating social unrest.

Robin manages to escape with the help of his gang, who pretend to be the concerned police officers, and Subash is suspended.

After a prolonged struggle, Subash frees himself and kills Robin and Metha while an attempt was made on the life of Roopavathi.

[6][7] N. Krishnaswamy of The Indian Express wrote, "Even a film that sheet anchors itself on thrilling action, [..] in credibility by neat characterisation [..] but Maanagara Kaaval doesnt waste time on these".