Nottie Thompson has Potential. That's what her neighbor, Mrs. Fairlie, finds out when a spell meant for Nottie's cat misfires. But that's all the spell says, and Mrs. Fairlie can't tell Nottie anything else. Armed with more questions than answers, Nottie is sent to meet another caster in town who might be able to help. Instead, she meets Dev, a boy from the royal city who definitely isn't telling her everything. Together with her cat and her new friend, Nottie is thrown into an adventure in which she alone might change the course of history - or not. It is only Potential, after all.