Sandhitha Velai (2000)

Liberally spiced with modern cinematic elements, this is a story revolving around two people who are identical in appearance. Thirunavukkarasu (Karthik) is the managing director of a car factory who also takes part in car races. In a cruel twist of fate, a wrong decision made under the influence of liquor and a few close relatives makes the car factory nearly bankrupt. In yet another quirk of fate, he happens to meet a man who looks exactly like him on a train, he requests him to take his place, and take care of his family and factory as his end was nearing. From there on Aadalarasu (Karthik), an unemployed engineering graduate, takes on the role of Thirunavukkarasu and helps the family and the factory climb to the top. Meanwhile, the body of Thirunavukkarasu is taken to the village of Aadalarasu and his father performs the last rites thinking that his son is dead. With Thirunaavukkarasu dying and being mistaken for Aadalarasu, Aadalarasu's family thinks he is dead while he takes Thirunaavukkarasu's place and helps them. However, the greatest challenge is that he has to do so without arousing the suspicions of his wife Akalya (Kousalya) and the rest of his family. Will Aadalarasu succeed in resolving all the troubles of Thirunaavukkarasu's family? How will his own future pan out? Will he be forced to remain dead in the eyes of the world?