Oorukku Uzhaippavan (1976)

Selvam (MGR), a secret agent takes the place of a rich industrialist, Raja (MGR).
The operation is facilitated because both men are as alike as two peas in a pod.
Indeed, a gang rages in the region and swindles the wealthy citizens like Raja.
The mission of Selvam is to neutralize this group.
The infiltrated policeman is going to find himself in the center of a large number of problems until affect his private life.
But the duty dominate before the family.