The film Kochadaiiyaan begins with an introduction explaining that the kingdoms of Kottaipattinam and Kalingapuri have been fighting each other for many years. We see a young boy from Kottaipattinam nearly drown, but is saved; this boy, Rana, grows up to become a soldier in Kalingapuri. He develops a friendship with Prince Veera Mahendran and eventually becomes the general of the army. Seeking permission to attack th…