On silent snowy nights, when no sounds can be heard, many people go deaf in one or both ears. The doctors can't do anything, so they think it might be paranormal. Ginko looks into some of the villager's ears and he tells them that the cause is a Mushi called "Un". After dealing with their small problems there is one more person who has lost sound in both of his ears and his condition is very different than the other people's, as he has also grown four horns on his head.

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 waiting along the sea shore, for a transport to get him across the bay when he meets a man called Shirou, who lost his wife under strange circumstances. Ginko seems interested and decides to listen to his story about how he lost his wife in a swarm of sea snakes, during fog. Ginko later comes back with information on the Mushi that caused the bizarre events.

Some kids enter Adashino-sensei's shed and find a lot of strange things, but there's one thing in particular that interests them. It's night and Adashino-sensei is called upon to look at one of the kids, a girl who has become bitterly cold, and the cause is a mysterious ink stone she touched. Luckily for Adashino-sensei, Ginko is passing through the village, and he shows him the ink stone, which he identifies it as a "Kumohami".

While resting in a bamboo forest, Ginko is approached by an odd man named Kisuke, who tells Ginko that he has been lost in the forest for 3 years. Ginko seems to have also become lost, and decides to go off and figure something out about the forest. After managing to get out of the forest, Ginko figures out that it's the work of a "Magaridake".

"There are countless fissures in the physical world. Those who vanish like smoke are lost in such hollows. Without their memories, without their souls..."

Ginko receives a letter in a cocoon, but it isn't adressed to him. Rather, it's addressed to an old accquaintance, Aya Tozawa, so he decides to visit her. Ginko is concerned about Aya, as she is still searching for her sister, who has been trapped in an Uroana for 5 years.

A lady named Aki discovered a green stain on her wedding gown, one year later she gave birth to a boy who, now grown up, has the same marks on his body. It turns out that the boy was originally born not as a human but as some shapeless green blob, which then turned into a human. Her husband asks for Ginko's help yet he is unable to save her son because it's the work of a "Watahaki".

"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.