Hailing from an orthodox Iyengar family, Ramanujam alias Ambi is an honest, straight forward advocate. Shy and reticent by nature, he is unable to express his love for his neighbour Nandhini, an aspiring singer. A stickler for law, he earns the nickname ‘Rules’ amongst his colleagues. Unable to tolerate lawbreakers, he brings them to book whenever he comes across one. But, with the lack of circumstantial evidences favouring the accused, his efforts are always in vain.