Inainda Kaigal (1990)

A grieving mother asks an ex-army man to rescue her son, Gunasekaran, who is locked up in a military prison. But at the same time a hideous criminal appoints a fugitive to kidnap Gunasekaran from the prison and kill the ex-army man. Both leave for their missions respectively, not knowing what Gunasekaran holds in his past and the fugitive takes this personal.