Ginko hears a rumor around town that a man is has prophetic dreams every once in a while. He suspects that Mushi are living in his dreams. He gives the man medicine to keep them under control and says he will come back when he has used about all of them. When Ginko returns, the village is deserted and torn up. Ginko finds the man alone in is house. The man then tells him about what happened while he was away.

Ginko is on another adventure as he is brought to a very peculiar island, by a young boy Nagi. Ginko is taken to see a girl, who the island inhabitants refer to as "Ikigami" and is said to be able to perform miracles however Ginko discovers that there is more to this.

Ginko arrives at a village where the men are in a heated discussion about the mountain. After learning of Ginko's identity they ask for his help to find another Mushi-shi called Mujika, who happens to be the master of the mountain. While on his trek through the mountain Ginko stumbles across a boy who's also looking for Mujika. Later they manage to find Mujika but this isn't the end of it.

Ginko arrives at a secluded place, to meet an old acquaintance, who seems to be in charge of a large volume of archival, confidential text. Ginko is allowed to read it, and discovers it is the work of Tan'yu, a writer. Tan'yu is the descendant of the Karibusa family, being born with a black mark on a part of their body.

"Build a fire - night comes... Light a fire - darkness comes... Hide the fire - flames arisen from corpses creep in..."

Ginko meets another Mushi-shi, which happens to be a young lady called Yahagi and surrounding the village she lives in is a new variety of Mushi growing on the mountain's fields. It's becoming so bad that the village people are at risk and as a last resort they plan to burn the entire mountain but Ginko doesn't think that this is the right option.

Taku is a peculiar young boy who has always wondered who the people were that always passed by the mountains during the rainy seasons. One day he meets a boy named Isaza, while catching fish. It seems that not only Taku can see the Komiyaku in the mountains however Isaza seems to know a lot more about the mountain than him.

"The world is filled with life unknown to man..."