(from ebookjapan):
Michi Igarashi is in the 5th grade of elementary school. She came here to Onigashima with her mom and dad. Dad, a geologist, is passionate about excavating hot springs and starts work as soon as they arrive. But instead of cooperating, the islanders sabotage the project and are reluctant to accept Michi and her friends... Furthermore, Papa's assistants, fed up with the endless work and the lack of results, abscond with the Igarashi family's money! The family's life on the island seems to have a lot of trouble ahead. ......