Katsa is a keeper. Keepers are people that can control an element. It has always been men that are born with that power, but no one but Katsa’s family knows of her ability, as a princess of the water kingdom it is important that no one knows of it. All four kingdoms have lived in harmony for centuries but with the threat of a Nonkeeper rebellion the kingdoms must come together to keep the peace. Will Katsa be able to keep her keeping a secret or will she risk it all to keep the ones she loves safe?