Beyond the realm, there is a magic race of extraterrestrial beings that control the tides and also the shifting of the seasons. A girl called Chun, one among those beings, seeks something more--she wants to experience the individual world! At three, she gets her chance and transforms into a dolphin in order to learn more about. However she soon finds that it's really a dangerous place and almost gets murdered in a vortex. Fortunately, her life is spared after a boy pushes himself to save her. Inspired guts and by his kindness, she uses magic to bring him back to life just to learn that this power comes in a serious price. On a new experience, until it's about to return to the individual world in order to safeguard his soul, she'll need to create her sacrifices.