Tomoki Sakai is a junior high student who dedicates every day to diving; Tomoki goes to the Mizuki Diving Club with his friends, but things change when a woman named Kayoko Asaki appears.
The Olympics are Kayoko's condition for the continuation of Mizuki Diving Club. 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 the club.
With the Olympics 18 months away, a training camp qualifier is the best chance the Mizuki Diving Club has; Tomoki realises he's got a lot riding on his shoulders.
It's the Golden Week holiday, and combined practice with veteran divers begins. They are an eclectic bunch, including one diver named Yamada, aka Pinky, who views Yoichi as a rival.
Ryo and Reiji feel like Kayoko is playing favourites 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, but Kayoko has grown impatient with Tomoki.
Yuki Kaji
Tomoki Sakai
Takahiro Sakurai
Yoichi Fujitani
Yuuichi Nakamura
Shibuki Okitsu
Kōki Uchiyama
Reiji Maruyama
Ryōta Ōsaka
Ryo Ohiro
