Rasigan starring by vijay and Sanghavi. Vijay (Vijay) is the grandson of Manorama while Sanghavi is the daughter of Vijayakumar and Sri Vidya. Sanghavi's family rent one of Manorama's houses. Vijay and Sanghavi pretend to hate each other while they actually they are in love. But later Sanghavi moves to another city because of her father's job and Sanghavi leaves her new address on several envelopes that Vijayakumar gives to Vijay.
Vijay tries to find her. One day Vijay goes to a restaurant to eat and in the toilet of the restaurant, finds "Blue Film" illegal shooting happening.
By this, they blame Vijay for the death of the restaurant owner (who tripped) and Vijay just has to escape. This news reaches Sanghavi's father who is a police officer. He tries to capture Vijay. The hero fights, runs some more until Vijayakumar finds out the truth and accepts the marriage between Vijay and Sanghavi.