1900 BC: the once-proud Suryavanshi rulers of the Meluha Empire are in dire peril. The empire's primary river, the Saraswathi, is slowly drying up. There are devastating terrorist attacks from the east, the land of the Chandravanshis - and to make matters worse, the Chandravanshis appear to have allied with the Nagas, an ostracised race of deformed humans with astonishing martial skills. The only hope for the Suryavanshis is an ancient prophecy: when evil reaches epic proportions and all seems lost, a hero will emerge...