Superpowers from hot springs? Who knew! On her return to New Zealand, Anira finds herself mysteriously affected by legendary spirits emanating from the natural geology and untamed forces of Rotorua. And they have a job for her to do. Soon Anira finds others like her, people young and old who are similarly called by the kaitiaki. Together they are caught up in a race against the developer intent on destroying the natural springs that are the home of the ancients and the source of their powers.