Mahaan Kanakku movie is tamil movie is directed by Sampath.Ramana is lead male role and pair with female lead role Rich Sniha.Music Director is A K Rishal Sai for the movie.

Ajit, a driver, decides to take care of Chandu after an accident changes his perspective of life. He gives up everything in order to devote his time to Chandu's upbringing.

A mother tries to persuade her daughter who has given up on her studies to pursue her education despite the financial burdens.

Vinayan is a rich businessman who loves his family. However, in a fit of rage, he accuses his wife of being infertile.

Viswanath (Rajnikanth), a famous lawyer, stays with his widowed mother (Vijayakumari) and physically handicapped sister (Uma). He sends Jegan, a rich magnate's son (Sathyaraj) and Lokaiya, two criminals to jail on the charge of rape and murder of an innocent girl. Jagan’s father, GMK (M N Nambiar) uses his influence and starts creating trouble in Viswanath’s life. GMK succeeds in getting Viswanath imprisoned on a trumped up charge. His heartbroken mother dies. Once out of jail, Viswanath sets out to punish the culprits when he temporarily loses his eyesight.