Just as every hope seems lost, young Ree comes into her sage powers. Despite having to fight the disapproval from those who think her too young and inexperienced, she comes up with a cure from unusual natural sources.
The race is on to get ahead of the epidemic. Time is tight, and a swindler's 'miracle cure' makes matters worse.
With Ree and the healers' lives in danger, is the whole planet doomed?