Aki Amano, a high-school girl from Tokyo moves to the Sanriku Coast in the Tohoku region to become a female diver. She becomes a local idol, then returns to Tokyo to try to become a real idol, and finally returns to Tohoku to help revitalize the area after the Great East Japan earthquake.

Amachan тривав 1 сезон. Нових епізодів не заплановано.