Kaathiruntha Kangal - Gemini Ganesan, Savitri - Tamil Romantic Movie

The film tells the story of twin sisters who get separated at birth due to poverty. One is brought up by a wealthy person, and the other by the mother (Lakshmi). A doctor (Gemini Ganesan) comes to treat the ailing mother, and the mother's daughter falls in love with him, of which the doctor is unaware. On her deathbed, the mother reveals to her daughter the existence of the twin. The young woman goes in search of her sister and by sheer chance, both travel in the same train. The train has an accident and the wealthy sister loses her memory and is presumed dead. Complications arise with the doctor marrying the other twin assuming she’s the wealthy one. A child is born and the wealthy twin turns up. The film then addresses the problems that arise.