Along with his partners Inspector Joseph and Vandhana, DSP Ranjith Kalidoss attempts to hunt down a psychotic killer before realizing he's himself suffering from an unwanted disorder.

A notorious gangster Vedha surrenders himself to encounter specialist Vikram whom he challenges every step of the way by narrating his life events in the form of riddles that needs to be solved in order to capture him.

Vijay and Manasa's families have been at each other's throats for the past 25 years. However, things take a turn when they fall in love with each other.