Parattai Engira Azhagu Sundaram movie revolved around a woman who comes to the city from her village in search of her presumably lost son. Azhagu Sundaram (Dhanush) is a young village lad who is the only son of his parents. His mother (Archana) dotes on him. Azhagu's father dies of some disease and he moves to Chennai in search of a job.
Sequence of events leads to Azhagu Sundaram being re-christened as Parrattai and is forced to wield the knife. From an innocent youth from a rural area, he goes on to become a gangster. As ever, he is the don with the heart of gold, who commands respect from people around him.
Meanwhile Parattai's mother leaves her village in search of her son and comes to the city. Are they destined to meet each other? The search, the anticipation and the hope of the mother and son to find each other in the crowded city form the rest of the story.
Dhanush's performance deserves a mention. As Azhagu Sundaram and Parrattai, he is compelling and is full of conviction but he can't be compared to Kannada Superstar Shivraj Kumar,who is outstanding. Dhanush sincerity stands out, especially in the weak script. His character has shades of the lead role enacted by him in Pudhupettai. Giving him good company is Meera Jasmine. Bubbly and enthusiastic, Meera leaves her charm on screen.