Ninaithadhai Mudippavan

Sundaram (M. G. Ramachandran) is an innocent band musician who lives with his physically challenged sister Sita (Sharada) in a village. He needs more money for his sister's marriage and he sets off to Madras to earn. On the other hand, Madras city Police department is shocked by series of diamond thefts. Inspector Mohan suspects the thief to be Ranjith Kumar who is actually a wealthy diamond businessman. He creates a plan with Leela (Manjula) to attract him to know his secret plans.