She's starting grade six, and her best friend Jemima doesn't want to be friends any more. Ali Jackson doesn't know why. Shell-shocked, and stuck in a slump, her analytical nature helps her to see through the hurt. Bouncing back, she finds that focussing on little fix-it projects takes her mind off Jemima, and stops her feeling sad. While trying to help the teachers change some things she thinks need fixing, a series of misunderstandings makes Ali feel like no one is listening, and she thinks everyone is against her. When the whole thing nearly blows up in her face, and with her heart set on changing the world, she launches one final offensive on the system, to right the wrongs and get her friend back.