Everything in the world holds a spirit, and nature's energy takes shape as fairies with minds of their own. Those fairies suffer harm once people stop valuing the natural world and a forbidden power stirs awake. A human girl meets a fairy from deep beneath the water, and their acquaintance lasts many years, yet the divide between fairy and mortal is one they cannot cross. On a remarkable journey, she resolves to find a power of her own. She holds that humans belong to nature too, and that people and the natural world can find some way to live side by side in harmony. The question is whether she can protect nature.