Achuthan Nair, an honest and sincere police constable, has a loving family consisting of his wife Ammu, two sons and two daughters. Achuthan Nair wants his elder son Sethumadhavan to be a police inspector. He shares a cordial and amiable relation with his son. Sethu is engaged to Devi, the daughter of Krishnan Nair, his maternal uncle. One day, for charging a petty case against the son of a Member of Legislative Assembly, Achuthan Nair is transferred to Ramapuram police station. The family also shifts to Ramapuram.