Chennai-based ACP Anbuselvan works together with a team of anti-narcotics officers and with the help of an informer virtually bring drug-dealing to an end. He is dedicated and believes being involved with anyone romantically may endanger her life, but changes his mind after he meets with Maya. Unknown to the entire unit, the informer was working for a gangster, who wanted all competition eliminated, and thus reign as the king of the underworld. Then Anbuselvan's world will be shattered when he and some of his team will be suspended for their involvement in the killing of a gangster, the brother of Pandiyan, while the latter vows that he will not rest until he has killed the entire team and their respective families.