'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?
In Montauban in 1944, Julien Dandieu in a surgeon in the local hospital. Frightened by the German army entering Montauban, he asks his friend Francois to drive his wife and his daughter in the back country village where Julien has an old castle.
100 miles north, a bit east and up, is Flåklypa... home of bicycle repairman Reodor Felgen and his two assistants - Solan Gundersen, morning bird and natural born optimist, and Ludvig who is a true pessimist.
A newly arrived governor finds his province under the control of the corrupt Colonel Huerta. To avoid assassination by Huerta, he pretends to be weak and indecisive so Huerta will believe he poses no threat.
There is a war in the world between the men and the women. A young girl tries to escape this reality and comes to a hidden place where a strange unicorn lives with a family: Sister, Brother, many children and an old woman that never leaves her bed but stays in contact with the world through her radio.