Mahesh Kumar and his wife , Deepa have a disagreement regarding the education of their daughter Rashmi . Deepa wants her to stay at home in Pune and get trained as an artist in an Art School while Mahesh wants Rashmi to move to Mumbai and study to be a teacher.
Mahesh says that his decision is final and that the law supports him because he points out that the woman sells her rights when she agrees to be married.
The argument grows and becomes fierce. Deepa, cunning and manipulative, lies to the doctor, a family friend, that Mahesh may be insane because he thinks he has discovered life on another planet by looking through a microscope.
Although Mahesh has discovered signs of organic life by studying meteorites through a spectroscope. Deepa also reveals to the doctor that she has obtained a letter that Mahesh once wrote confessing that he himself feared he might go insane.
Mahesh loses his control and temper when Deepa very cleverly plants this idea that no father can be sure of his child as it’s a secret known to a woman only. In a fit of anger, Mahesh throws a bottle on Deepa who saves herself and later on, this leads to the further deterioration of Mahesh’s mental health.
With the help of the Doctor, its planned that Mahesh should be tied in a straitjacket to be taken to a mental hospital. This cruel act is done under the supervision of Tai, the family maid who tricks Mahesh and ties him in a straitjacket. Mahesh is shocked to see himself outwitted in a devious way and suffers a stroke.