A criminal psychologist helps the police department to get the role of a consultant and also to gain enough experience to complete his Ph.D. What starts as a simple case turns out to be a challenging ordeal. Will he crack the case? Who's the criminal mind meticulously plotting the murders? Forms the remaining part of the story. 

Great Shankar is a high-octane cop action film. The plot of this film revolves around the protagonist who is an ethical man of society and a cop with immense integrity. The protagonist does his best to defeat the people who meddle with the precious lives of youthful students. He stands as a true people's man who always does the right thing.

A famous Kovilakom is well known for its pedigree and tradition. Most of the people in the village are somehow related to this Kovilakom. When a prominent person comes from Delhi to the Kovilakom to solve their issues, the village is stirred up. Consequently, instead of a solution, the situation becomes increasingly complicated.