The first meeting of Ramkumar with heroine Arundhathi, who is a police officer, ends up in a clash. Later, when Arundhathi comes to know that Ramkumar is an orphan, she feels pity for him and starts moving with him. As days go, these two get attracted to each other and become lovers.
In this situation, Nassar meets his death one day. When Ramkumar comes to know through Arundhathi that Nassar has been murdered, he wants to take revenge on the culprits but Arundhathi wants to handle this case legally. The rest of the happenings can be enjoyed on the silver screens.
Hero Ramkumar is able to show varieties in his acting by being innocent in the first half and reacting aggressive in the latter part. Heroine Arundhathi, who has given importance as a hero, looks magnificent in her police role and attracts the audience with her acting skills and charms.
Nassar gets the applause of the audience for his experienced acting. Mottai Rajendran has performed well as a comedian and villain. The other artists have done justice to their parts.
Director Sundara Elangovan has delivered a crime thriller story at a fast pace but the movie would have been more enjoyable had it been filled with interesting sequences.
Songs are okay in Selva Ganesh's music and the BGMs create the needed effect for a thriller film. The camera works of Sri Ranjan Rao adds support to the tempo of the screenplay.
On the whole, Arthaanari is aggressive.