Kunjing, a small island that exists in the gap between time and space, is a desolate land that we humans have never set foot on. And in every corner that is not noticed by us humans, there is a door to the Kun Realm. It can be a leaf, a flower, or even a seed that is about to sprout. It seems that many living beings other than humans have a great relationship with the Kun Realm. Fortunately, not everyone can easily open the door to the Kun Realm. The whispering forest in the Kun Realm whispers to us all the time, but unfortunately most people cannot hear it. Our protagonist Hui Cong is born with the ability to hear voices from the Kun Realm, and also has the ability to communicate with animals and plants, but he doesn't know what this means. An outing organized by his classmates that he has not participated in seems to be the starting point of the story.