Devyani can?t believe her school has shut down for being built on land that was once a lake! What?s worse, she?s left her father?s precious rock in her school desk. Before she can retrieve it, her mother, Dr Brinda Ratnagar, a water resources expert, takes the family to Hampi where danger lurks beyond the crocodile-infested Tungabhadra. Someone wants Dr Ratnagar silenced, and no one can be trusted. As Devyani, her brother Sarang, and their cousin Nakul?the Seekers?race to help, another story unfolds centuries earlier. In the Vijayanagara empire, sixteen-year-old Shubha dreams of designing grand aqueducts like her grandfather. But when she overhears a plot to destroy a vital dam, she faces a difficult choice.