Jo was once a weather warden, helping to protect humanity from the wrath of Mother Nature. But at the end of the first book Jo is killed. David, a powerful djinn, manages to resurrect her as a djinn. Jo now must leave all things human behind and learn how to be a djinn.
But it is not that simple. She is still linked to David and draining his power. She must learn to harness power on her own. Meanwhile something strange is going on in the ethereal plane and it has David scared.
Jo is then assigned to study with Patrick, the only successful human-to-djinn transformation. And then the action really begins.