Muthu, a carefree man, is a lawyer who solves the problems of people, in stark contrast to his brother Manickam who believes in creating trouble for those around him, especially women. Their wealthy father Jamabulingam is money-minded and is least bothered about other things in life. Jamabulingam arranges the marriage of Manickam with a woman named Sivakami, but she loves another man named Dhamotharan. Manickam impregnates Kaveri, a poor woman, then disavows her and their child. Muthu manages to correct all the wrongs caused by Manickam, succeeds in bringing Sivakami and Dhamotharan together, and marries a woman named Sevanthi.
Kavalai Illaadha Manithan was released on 19 August 1960.[3][4]The Indian Express wrote, "Raja Sulochana has done justice to her part. But there is no seriousness at all in Radha's acting and Chandrababu's seriousness is rendered ludicrous".[5] Film historian Randor Guy noted that the film was not a commercial success, mainly because of the delay in its production. Kannadasan later remarked that, in contrast to the film's title which meant "the man without worries", he, as the producer, became "a much worried man in the process".[1]
