Welcome to the Academy of Sport for Girls - the most prestigious sports school in the country!

While attending a state training camp, Delphie Attkinson and the Year 7 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, however in doing so, she uncovers a shocking secret.

Can swim queen Delphie keep her winning edge as rivalries and unexpected scandals surface?