Synopsis: An attempt is made on the life of a reigning don, and it sets in motion a succession battle between his three sons. In the beginning of Nawab, an attempt is made on the life of an ageing don, Senapathy. The don has three sons – the eldest one, Varadan is hot-tempered, the second, Thyagu, a dark horse, and the third, Ethi, the least favourite. And they all want to find out the person behind the attempt. The suspicion is on a rival, Chinnappadas.