Dileep is an industrialist who runs a company named Minerva Exports & Imports. Despite his humble exterior, he has a dark side; he preys on nubile girls, has sex with them, and kills them. These proceedings are video-recorded and watched by his adoptive father and mentor, another deranged woman-hater who, as with Dileep, had a disillusioning experience with women in his past. The man stays holed up in a far corner of Dileep's mansion watching his adopted son carry out what he is too infirm to do. The victims are buried in Dileep's garden and a rosebush is grown above.

Dileep meets a garments saleswoman, Sarada, and develops a romantic attraction for her. Conservative Sarada insists that Dileep must marry her if he wants to have his way with her. The romance proceeds and culminates into marriage. On their first night after marriage, Dileep rushes away to tackle a witness who had seen him taking Chitra, an employee of Minerva, to a restaurant; Chitra was subsequently killed by Dileep. The witness, a waiter at the restaurant, demands money to be silent, forcing Dileep to kill him.

Meanwhile, Sarada, who has been waiting for Dileep, notices several odd situations in the home. Dileep's cat licks Sarada's blood after she inadvertently cuts her finger. The cat chases her and she ends up in a secret room where the entire story of Dileep is written on a wall by him. It contains details of his deranged life and the names of the girls he had killed. Frightened, Sarada rushes out and stumbles into the room of Dileep's adoptive father (who Dileep had told her was mentally ill and not to be disturbed) and gets shocked seeing him watching videos of Dileep having sex with girls and killing them. Sarada screams, catching his attention but manages to lock him. She tries to escape, but Dileep returns.

When Dileep goes to park his car, Sarada rushes out of the house. After freeing his adoptive father and realising that his cover has been blown, Dileep chases Sarada. The chase culminates in a graveyard where Dileep accidentally gets impaled by a cross but survives. When he continues to chase Sarada while staggering, he is caught by the police. Dileep is imprisoned but becomes mentally imbalanced. He keeps chanting and writing Sarada's name on the wall as it is the only coherent thought that remains; all other memories have been erased from his mind. Sarada, instead of remarrying, regularly visits Dileep in jail, confident that her marriage will be saved and Dileep will be released soon.