Haruka Nanase's new stage to take on the world is Sydney – a place he once visited, a place of dreams. One day, while taking a short break before his departure, Haruka coincidentally runs into a swimmer that competed at the All Japan National Championships, andi s burning for a challenge. With the feelings of his friends whom he swam together brimming in his heart, Haruka steps forward into a brand new world. What awaits him is the world champion, Albert Volandel. The swimmers mentally prepare themselves for the competition in Syndey. What will they fell and what will they swim for as they compete for a place at the top of the world? Their intense battle with the water begins here!

After his first appearance on the competitive world stage, Haruka was overwhelmed by Albert’s swimming and lost his way. “What are you swimming for?” His reason to swim and what the water means to him are called into question. The question has trapped Haruka, and he struggles to find the answer on his own.