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... (C)EM,K/D