The life of an honest and determined police officer Biju and the various criminals he puts behind bars.

The story of Action Hero Biju revolves around certain interesting episodes in the life of a young police officer, his personal and professional life. Nivin Pauly plays the titular role, Sub Inspector Biju Paulose, an officer in a Janamaithri Police Station. The situations take the story forward. Action Hero Biju is a realistic portrayal of a cops life, in contrast to the macho appearance seen usually in action movies.

Biju is an honest policeman who fights the injustice head-on. In his pursuit to keep things under control and clean, he encounters a series of events and cases which test his authority, honesty and integrity. With a week to his wedding, what ensues is a heartfelt story of a cop sans the cinematic hype.—PipingHotViews