Nona's disease is progressing and her short-term memory is worsening, so Sabine and Dominic are working hard to find the remaining two silver charms to lead them to the remedy book. After finding the first missing charm at the end of the last book, Sabine also receives a crystal ball--a "witch ball". She discovers, unfortunately, that the witch ball is possessed by an angry spirit, who causes quite a bit of chaos. Manny, Sabine's school newspaper editor and one of the few who knows she's a psychic, uses the ball at the fortune-telling booth at the school fair and makes predictions which begin to come true. The main problem is that one of his predictions is that Sabine would die by he end of the week! In the course of tracking down the others for whom Manny made predictions, she learns new information about friends and classmates, some of whom are not who they seem to be at first. She's still hiding her psychic abilities from best friend Penny-Love and "perfect" boyfriend Josh, but she's also getting to know better and really trust her Goth friend Thorn, Manny, and Dominic, with whom she feels a strange, powerful, and confusing connection. Her twin sisters, back home with her parents, are also having issues as they grow older and into their different personalities, and Sabine struggles with her mother, who does not appreciate her gifts and who she feels kicked her out of the house because of them. Will Sabine really die at the end of the week? Will she and Dominic find the remedy book in time to help Nona? Can she help the spirit in the witch ball move on? Will she reconcile with her family?