Ramu, a secret agent, is given the assignment to catch a terrorist group that sells confidential information to foreigners. He goes to Neela's house undercover to expose the criminals.

Chidambaram Pillai, a revolutionary leader, starts the first shipping company in India. With the help of this company, he fights against the monopoly of the British over maritime trade out of India.

After the East India Company forces Kattabomman, the king of Panchalankurichi, to pay taxes and be their subordinate, the latter decides to fight against them.