Set in 1995 in Cuddalore region, Tamil Nadu, Rajakannu and Sengani are a couple from Irular clan who work in fields of upper rank men to control rodent pervasion and catch venomous snakes. Rajakannu is called to a rich man's home to get a snake that sneaked inside a room. The exceptionally following day, an instance of robbery is accounted for when the spouse of the man reports missing gems pieces from her wardrobe and raises question on Rajakannu. The police assaults Rajakannu's home, who left the town for work. During the attack the police severely beats and unlawfully keeps his pregnant wife. The police captures different family members, Rajakannu's sibling, Iruttupan, his sister Pachaiammal and his brother by marriage, Mosukutty and torments them to admit the whereabouts of Rajakannu. Police finds Rajakannu and capture him. They fiercely torment him to admit the wrongdoing yet discharge his wife. Later, Sengani is educated that every one of the three men in confinement are slipping away and police compromises her again to enlighten them regarding their whereabouts.
Mythra, who shows grown-ups from Irular clan, becomes acquainted with about Chandru, a legal advisor who battles cases for ancestral networks, and figures out how to persuade him to look for equity for Sengani. After paying attention to the portrayal of all occasions that occurred up to that point from Sengani, Chandru records a 'Habeaus corpus' case in the court. The public lawyer with regards to police produces onlookers to prepare a story that Rajakannu and the other two to be sure departed suddenly from prison. Finding the holes in observers proclamations, Chandru figures out how to discover reality that onlookers were submitting prevarication and requests that court research two cops – Sub-Inspector Gurumurthy, a casteist cop and constable Veerasamy. Public lawyer with regards to police guarantee that the three charged have escaped to Kerala when Varadarajulu, a colleague of Iruttapan, recognizes that Iruttapan informed him through a call that he escaped to Kerala subsequent to submitting burglary. In counter, Chandru figures out how to discover reality that the three cops being referred to went to Kerala to settle on a telephone decision to Varadarajulu which Gurumurthy concedes, that he mirrored the voice of Iruttapan. On additional hearings, in the long run it is found that Rajakannu was killed by the cops in lock-up and the other two blamed were shipped off a prison in Kerala to conceal reality. It is likewise demonstrated that Rajakannu, Iruttapan and Mosukutty are really blameless people who were outlined for theft that was submitted by somebody from whom cops have accepted hush money.
Mythra finds Iruttapan and Mosukutty who were changed to one more prison in another city following Rajakannu's demise. They inform the court concerning the torment every one of them three went through and the three cops who killed Rajakannu are in the end captured.
