Etsuro Kurosu faills getting into a university and becomes a hikikomori. One day, he tries to hang himself from a hook on the wall in his apartment. He fails, but…

A boy, Shin, and his family are forced to evacuate the island of Miyakejima, when it erupts in 2000. Shin’s dog, Rock, is mistakenly left behind.

The fairies from Infant Island discover a lost city, as well as a giant monster that is attracted to environmental calamities.