Thanga Surangam

Shivaji , a CID officer is on a mission to bust a gang that is flooding the market with fake gold bars. The gang which had abducted a brilliant scientist who is an expert in alchemy had not been getting his cooperation to perfect the fake gold bars. The scientist daughter , Bharathi unaware that her father is a captive with the gangsters is leading a happy , carefree life with the fat purse sent every month by the gang , supposedly from her father. Shivaji , during his investigation first suspects Bharathi to be part of the gang, but later finds out the truth and falls in love with her. But the gang abducts Bharathi also to force her father to cooperate. Shivaji trails the leads and lands in the gangster's den. There is a twist. His mother reveals that the leader of the gang is none other than his own father who deserted the family when Shivaji was a kid. Torn between duty to the country and his love for his mother, he decides to confront the gangster unarmed and gets shot by his father. Luckily he survives and the father repents and surrenders to the police. The scientist is released and Shivaji marries Bharathi.