'Kaun' is a suspense drama aimed at terrifying the audience. It is about a girl (Urmila Matondkar) who is scared because she is alone in the house on a stormy, rainy evening. The television news announces that a psychopathic killer is at large, which terrifies her all the more. Suddenly, the door bell rings, and a man, asking for somebody, begs her to let him in. She refuses. He persists and she finally lets him in the house. His behaviour makes her imagine that he is the killer. A second intruder comes in the house. The two guys accuse each other of being the killer.