Georgekutty, who is obsessed with the beautiful Sundari, uses his wealth to disgrace her and her family. Unable to bear the suffering, Sundari runs from her home and meets Maadan, a labourer.
An old man K.K. Madhavan noted for his thinking and stance on social issues is proud of his scientist son Siddharthan but upset about the country's involvement in nuclear tests. He continues his crusade against nuclear weapons but together with his loyal wife Bharathi finds himself increasingly isolated as his own son, his party and the country celebrate the nuclear advances made in India.
