Yamini is a night-club dancer and is suffering from night blindness. After the death of her lover, she lives alone in her big house. Ouseppachan, a millionaire, who sees her dance, wants to seduce her. He approaches her one night but she rejects him. That night, Ouseppachan tells his driver, Mukundan, that millions of his black money is kept in the secret chamber of his bed, at the hotel where they stay. Mukundan kills Ouseppachan to get the money. Meanwhile, a young girl, Mini, who had eloped with her lover Sethu, comes to stay in the same room of the same hotel. While making love, they accidentally find the money and escape with it. That night, they take shelter in Yamini's house. After hearing about their love, Yamini considers them as her friends and allows them to stay with her. But Sethu turns out to be a womanizer. He rapes the housemaid and makes love to other girls. Meanwhile, Mukundan comes searching for the couple. Sethu makes a secret contract with him to kill Mini. Meanwhile, police officer Ajith, who investigates Ouseppachan's death, meets Yamini and tells her that her lover was murdered by none other than Sethu. Now, Yamini has got only one thing on her mind, that is to take revenge on Sethu.
—Anonymous