A battle for power ensues as warring gangters thrive to gain possession of a "black box" that can make them richer than they already are, and an undercover cop intervenes with the help of his sharp intellect and an instinct to kill.
Set in southern India in the late 1930s, this provocative tale traces the story of three people caught in an inexorable web of forbidden romance and dangerous secrets. After a British spice planter falls in love with his alluring servant, an idealistic young man finds himself torn between his ambitions and his family, his village and his past.
Kutti Puli (Sasikumar) is a happy go-lucky good hearted ruffian, whose mother (Saranya Ponvannan) wants him to settle down. But our hero does not believe in love or marriage till he meets Bharathy (Lakshmi Menon), who changes his attitude. But his enemies will not allow him to lead a respectful family life. Meanwhile a Silambatam match breaks out into a haphazard fight between Puli and a local gang; the events turn out to become a bloodbath after the goons beat Puli up pretty badly. Post the trauma and pain, will Puli avenge his pride? What happens to Bharathi's love? Can Puli lead a normal life that his mother always wanted to? The rest of plot unveils with all these questions answered.
The story is about Sameer (Mammootty), a sweeper with the Alapuzha Municipality, who is always on tenterhooks because he is on the police radar whenever there is trouble or an act of terror occurs. Later it is revealed that his brother-in-law Shahjahan (Unni Mukundan) was suspected to be part of the terror team that had planted bombs in Bombay in 1993 and was later killed in an encounter with the Army in Andhra Pradesh.