Red Sun) is a 1983 Indian Tamil-language action film directed by Muktha Srinivasan,[1] starring Rajinikanth, Radha and Saritha.

[3] Vijay, a merchant navy officer, comes home on leave to meet his sister Selvi and her husband Vishwanthan but finds them missing.

With Chitra's help, Vijay is able to find Selvi, but is shocked when he learns that her husband has vanished and she has stopped speaking.

Unable to make Selvi speak but determined to resolve her troubles, Vijay with the help of his friend Vidyasagar discovers that Vishwanathan had testified in court against a dangerous criminal and is being held hostage by his associates.

Whether he is able to retrieve Vishwanathan and bring normalcy to Selvi's life forms the rest of the story.