Embarking on a new journey in Sydney, the city of his dreams, Haruka Nanase encounters a fellow athlete from the All-Japan Invitational during a brief respite. Fueled by memories of past swimming companions, Haru bravely steps into a fresh chapter of his life. As the Sydney tournament approaches, the competitors strive to uplift their spirits. Amidst this fervent atmosphere, the renowned champion, Albert Volandel, stands as a formidable opponent. Each swimmer harbors unique emotions and aspirations as they strive for excellence on the global stage. Their intense battle against the waves commences, marking the beginning of a gripping struggle in the water!