Tomoki Sakai is a second-year junior high student who dedicates every day to diving. It all began years ago when he was drawn in by the beautiful diving of Yoichi Fujitani, a boy three years his senior. Tomoki goes to the Mizuki Diving Club (MDC) with his friends Ryo and Reiji, but everything changes when the mysterious woman Kayoko Asaki appears...

The Olympics. That was what Kayoko's condition was for the continuation of MDC. Everyone is a little hesitant in accepting her as the new coach, but Tomoki throws himself into the practice given to him. Meanwhile, another young man visits MDC.

Kayoko has brought Shibuki Okitsu, a young man who was raised in the ocean waters of Tsugaru. Everyone at MDC is awed by his dynamic style, which is in complete contrast to Yoichi's perfect technique. One day, Kayoko tells Tomoki to perform a "three-and-a-half" for the meet in July...

It's the Golden Week holiday, and combined practice with veteran divers begins! They are an eclectic bunch including one diver named Yamada A.K.A. Pinky who views Yoichi as a rival for some reason. Tomoki enthusiastically embraces the higher level of practice, but...

Ryo and Reiji feel like Kayoko is playing favorites with Tomoki. Tomoki feels sad at the change in attitudes of his two friends. Unable to stand by and do nothing, Yoichi calls Tomoki over on their way home.

Tomoki is unable to get over the shock of losing his girlfriend to his younger brother. The club is competing in an upcoming meet, and Kayoko has grown impatient with Tomoki as he's failed to show up to MDC, and she tells him that he is a natural born diver.

Having finished fourth in the meet, Tomoki has never felt so bitter and dejected in his life. In other news, Shibuki injured his hip during the meet, and Ryo ended up with disappointing results. They each take time to reflect before embarking on a new path.

Shibuki left a letter before returning to Tsugaru. He doesn't get much of a chance to spend time with his girlfriend Kyoko and his family before Tomoki and Yoichi suddenly appeared after returning from their training camp in Beijing. The three friends are enjoying something different from their usual practice, but then they deliver a DVD Kayoko had asked them to hand ...

Yoichi was unexpectedly chosen for the Olympics. As his parents and other MDC members congratulate him, he is unable to hide his own hesitation. Meanwhile, Shibuki had returned to MDC, taking up ballet as a form of training, and Tomoki began practicing a new move.

Tomoki was working hard to learn a new move when he injured himself during practice. Yoichi came by to check on him and is moved by Tomoki's tremendous passion for diving. Having made up his mind, Yoichi decides to visit the chairman of the Japan Swimming Federation.

Yoichi had decided to turn down his free ticket to the Olympics, opting to compete in the qualifiers against his friends instead. With his national rivals joining in the combined practice, the Olympic qualifiers are about to begin!

Pushing himself too hard every day has put Yoichi off his game. The MDC members are hesitant, but each one heads towards the platform with resolve. The crowd roars in excitement as one incredible performance follows another, when it's time for Tomoki's final dive. He leaps off the platform, searching for the view only he can see...