Tomoki Sakai, is 14 years old, and he's been dedicated to diving since he was a child.It all began when he met Yoichi Fujitani, a genius diver three years his senior.Tomoki and his friends attend the Mizuki Diving Club, but their new coach Kayoko Asaki says the club will close if it doesn't produce an Olympian.And so begins their fight as they lay everything on the line for a single moment!