Ashwin Kumar (Jiiva) is a photojournalist working for the private newspaper Dina Anjal. He witnesses Naxalites robbing a local bank. He chases them and manages to click photos of the robbers. When he tries to escape, he is stopped by a young woman Renuka 'Renu' (Karthika Nair) who assumes he is the culprit and helps the robbers to take his camera. However, he is able to secure the memory card of the camera. The police catch him, and to prove that he is a press photographer, he shows the photos to them, who identify everyone except the gang leader (whose face is covered by a mask). At his office, he again meets Renuka, who has newly joined as Article Editor. Saraswathi 'Saro' (Piaa Bajpai) also works in his office and has feelings for Ashwin, who does not reciprocate.
Settled in her new job, Renuka writes a cover story about a politician Aalavandhan (Kota Srinivasa Rao), describing his attempt to marry a minor. Enraged by this, Aalavandhan barges into the newspaper office and shouts at Renuka. The audio recording of her interview disappears (courtesy Aalavandhan), and she is fired from her job for falsified reporting. Ashwin later risks his life to capture the pictures of Aalavandhan who actually engages in child marriage in a temple at midnight. Later the story with the photos is printed in their newspaper and this makes Renuka to fall in love with Ashwin, which the latter reciprocates. Saro is initially jealous of the love between Ashwin and Renuka, but later accepts it and gets over Ashwin.
Meanwhile, Vasanthan Perumal (Ajmal Ameer), a recent graduate and engineer who is Ashwin's former college mate, strives hard to enter the politics by contesting the upcoming election. He is contesting against more experienced politicians who capture the people by giving freebies and money. No one cares about Vasanthan and his team of graduates, who promise a healthy government to people. Their party name is Siragugal (feathers). Ashwin and Renuka find out about Vasanthan's election campaign, and they and the entire Dina Anjal team extend their support to the campaign, covering it extensively, much to the chagrin of Aalavandhan and the Chief Minister Yogeswaran 'Yogi' (Prakash Raj).
One night, Vasanthan's party organises an election campaign meeting. Ashwin, photographing the event, receives a text message from Saro that states there is a bomb underneath the stage where Vasanthan is speaking. Ashwin manages to save Vasanthan just before the bomb explodes. Later, Ashwin finds Saro fatally wounded near the blast site. Saro struggles to tell something to Ashwin and Renuka before she dies. Ashwin, through a video clip recorded by another photographer, finds out that Saro was intentionally killed by someone. He later notices a resemblance between the leader of the bank robbery and this unknown killer, concluding that the Naxalite leader killed Saro.
A few days later, Renuka notices that Vasanthan's photo in their newspaper was cut from a college class photo, where Ashwin is also present. Confronted by Renuka, Ashwin tells her that he and Vasanthan studied in the same college and were best friends. He also tells her that he is happy for Vasanthan's success and is wholeheartedly supporting his election campaign.
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