The murder of Vignesh, an associate of minister Anandan, puts pressure on the police to solve it immediately. The case is assigned to the brilliant, young IPS officer Sakthi Pandiyan.
Sakthi is in two minds about continuing in the police force. Her father, friends and boyfriend, Diwa, play support system. Meanwhile, Sakthi's team of all-women police officers (AWPS) is introduced.
Sakthi's investigation resumes after the snatching and recovery of her evidence box. She cross-checks everything from victim's history to autopsy report to crime scene and beyond.
Venky identifies his attacker. Sakthi and team throw a surprise birthday party for SI Maya. Just when Vignesh's case is about to reach a cul-de-sac, Sakthi's father comes up with a brilliant theory.
Minister Anandan puts pressure on Sakthi's handling of the case. She calls her team for an emergency regroup, which turns into something else altogether.
The mystery woman, Sandhya reveals her backstory, that of a girl raised by her father on his own. However, a heinous incident turns her and her father's life upside down.
Ramani, Maya and Mercy explain to Sakthi how Sandhya's rape case was shushed by Vignesh using his political power and how that led to their murdering Vignesh.
The AWPS search for the two other rapists in Sandhya's case. When they ruffle some feathers, Sakthi gets another call from Anandan's office, where an unexpected foe emerges.