Jack Harries, the boy Hannah Williams hates with everything she has. The boy never leaves her alone, annoys her, picks at her, drives her crazy. He finds it really amusing and funny. But for her, it only makes her hate for him build up. One day when they are in an argument she says something that she will regret and somehow she ends up having to make a list of ten things she hates the most about Jack Harries, she has only a month, if she does so, Jack will leave her alone forever.