Mahadevi is a princess, whose father, the king, is defeated in battle. Despite this, he is invited by the rival king to stay with him as his honoured guest. The victorious king has an adopted daughter Mangamma and a son (‘Master’ Murali). His senior commander, Karunakaran is attracted to Mahadevi, but she rejects him. Thereby she earns his wrath. Karunakaran hatches various evil plans to get her, but in the meantime, Mahadevi falls in love with the other commander, Vallavan. Karunakaran tries to kidnap Mahadevi with the help of his sidekick Mariappan, but by mistake ends up kidnapping Mangamma.