Sunil (Sukumaran) comes to Ooty to look for a job and meets Varma Jose Prakash who is a rich businessman and asks for a job. He is turned down but doesn't give up hope. One day he saves Varma's life and earns his trust. Varma takes him home where his sister (Sreevidya) and his daughter Radha stays. Radha is mentally unsound and Sunil's intentions become clear when he tries to take advantage of her. Later it is told by the doctor that the only way Radha can be kept under control is by getting her married. Sunil uses this opportunity and tells Varma that he will marry her. Turns out that the doctor was also a part of Sunil's plan and later on Pradeep who is Varma's nephew also gets on board with the condition that he will be given a share of the assets that Sunil will acquire after killing Radha. Sunil tries to get Radha killed by breaking a bottle on her head. But she is saved and she recovers from her mental illness. But she doesn't remember anything about the incident. The inspector (Janardhanan) smells something fishy and suspects Sunil. After a few days Varma's sister (Sreevidya) is shot dead and the police suspects Sunil. Is Sunil the murderer? Will he succeed in getting rid of Radha and acquire all her wealth? What is the reason behind Sunil's hatred for Varma?
—Padmabhooshan Prem Nazeer