On Ishigaki Island, conflict brews over a large-scale bridge construction project. One day, Yajima (Sho Aoyagi), a public official from the Ministry of Environment, is sent to Ishigaki Island. Yajima announces to his colleagues that he is absolutely opposed to the bridge construction project and that he wil become a coral ranger who protects the coral reef there. This surprises his colleagues.
Hana is a nineteen-year old expectant mother. She travels with her grandmother's ashes to her grandmother's house. Hana's mother, who gave birth to Hana when she herself was a teenager, now resides in the home. They are on the outs with each other, but are forced to stay with each other when Hana's boyfriend fails to show.