Viduthalai (1986)

This fast-paced romantic thriller follows the fluctuating fortunes in the life of Raja (RajiniKanth), a thief- expert in breaking open treasuries.

During one such robbery, he comes under the notice and investigation of a jolly but shrewd police inspector Rajasingam (Sivaji Ganesan). Radha (Madhavi) is a gorgeous disco club dancer and singer. Both Raja and Radha are in love with each other. But Raja has not disclosed to Radha that he is a thief.

An evil brother-sister duo- seek revenge against crime boss Sudarshan who cheated Jwaala and siphoned her money. Therefore they hire Raja to break open Sudarshan's treasury and steal back the money. Raja is paid a token amount to do the job. But suddenly Inspector Rajasingam arrests Raja and the court sentences Raja to 2 years imprisonment.

Radha is devastated after she realizes Raja was a thief. Meanwhile, Amar (Vishnuvardhan) is an ace crime member in Sudarshan's gang who revolts against Sudarshan. He is a widower with a daughter is studying in a boarding school.

However before quitting Sudarshan's gang, Amar has committed a crime wearing a mask and Inspector Rajasingam is investigating that case. Once Amar saves Radha from a gang of rowdy bikers. They meet regularly as Radha likes Amar's daughter. Soon Amar begins to love Radha who does not reciprocate because she still loves Raja. Amar realizes Radha is not interested and does not proceed. Raja completes his jail sentence. While returning, he meets the Vijaykumar, who again reminds him of the deal to rob Sudarshan.

During the conversation, Amar incidentally reaches the site and a fist fight ensues between Amar and the Vijaykumar. While fleeing, Vijaykumar swears revenge against Amar. Thus Raja and Amar meet for the first time. Raja takes Amar to introduce to Radha but both Radha and Amar pretend as if they do not know each other since they don't want Raja to unnecessarily suspect them. Later Vijaykumar's goons kidnap Amar's daughter and beat Amar who is hospitalized.

In return for Amar and his daughter's safety, Raja agrees to do Vijaykumar's job. He nurses Amar back to normalcy and soon they turn thick friends. Amar promises Raja he will support him in this one last robbery. They plan to shift to London after the robbery with the money. They concoct a scheme whereby Amar would steal gold bars and jewellery from a safe, then phone the police, let Raja take over, get arrested, get a prison term for about 12 to 18 months. After his release, he will join Amar in the U.K.

Things don't go according to plan as Raja gets arrested for killing Sudarshan while Amar and Radha reach London with the money. Raja construes that Amar deliberately framed him so that he can get Raja out of the way, keep all the money (as well as Radha) for himself. Raja escapes from jail and reaches London to apprehend Amar.

After a brief tussle between the two, Raja realizes the truth and that Amar did not frame him. Vijaykumar and his goons reach London to take revenge against Raja and Amar. In the climax of the movie, Amar sacrifices his life to save Raja from getting killed by Vijaykumar.