Yogam Rajayogam: Siva (Ramki) is a happy-go-lucky, good natured guy who goes out of his way to help people. He and his friend Kumar (Senthil) are on the look out for a job when they come across the rich and spoilt girl Usha (Pallavi). The first meeting itself sets off sparks and Siva and Usha have a clash. Usha goes out of her way to insult Siva but during a time of danger, it is Siva who comes to her rescue. The bitter rivalry, soon turns into a budding love. However, Usha's rich father will have none of this and decides to do away with Siva. Watch what happens next forms the crux of the story