While attending a state training camp, Delphie Attkinson and the Year 7 Royal Academy of Sport for Girls swim squad come face to face with their biggest rival, the National Swim School. Delphie sees this as an opportunity to learn all about the strengths and weaknesses of the Swim School’s best swimmers, the unbeatable Ogilvy twins. Surprisingly, Delphie forms a close friendship with one of the sisters – but in doing so, she uncovers a shocking secret.
Can swim queen Delphie keep her winning edge as rivalries and unexpected scandals surface?