'Idhayakkani' is the story of the kind-hearted Mohan (MGR) whose theory of life is 'equality' and who puts it in practice by sharing equally the income of his estate with his labourers. He has another passion - he wants to serve the country - and for that, he has joined the police force as an officer. He meets a needy girl, Lakshmi, and on the advice of and elderly domestic help, he permits her to stay in his house. Tongues start wagging and Mohan decides to marry the girl. However, his happiness is short-lived. He gets the shock of his life when he comes to know that his wife is involved in the murder of a leading scientist. What is the truth? Did Lakshmi murder the scientist or is she innocent. If so, then who is the culprit? How does Mohan go about finding the truth?
The residents of a suburban high-rise apartment building are being infected by a strain of parasites that turn them into mindless, sex-crazed fiends out to infect others by the slightest sexual contact.
On Saint Valentine's Day in 1900, the female students at a private Australian school are given permission by their stern headmistress to travel to an ancient volcanic outcropping for an afternoon picnic.