Kochadaiiyaan opens with a prologue that tells us that the two kingdoms, Kottaipattinam and Kalingapuri, have been at war with one another for generations. We see a boy from Kottaipattinam, who is about to drown, being rescued and the boy, Rana, grows up to become a soldier in Kalingapuri. He earns the friendship of the prince Veera Mahendran, and is made the general of its army. He seeks the king...