On a remote volcanic island that everybody wants to leave, little Nana learns to stay. Her mother, Nia, went into exile right after she was born and Nana grows up in the family of her father. One day, the family learns that Nia is ill. Nana begins to develop high fevers and is sent to the foot of a volcano for treatment. There she encounters a world steeped in magical realism, between dreams and reality. Later, when Nana is a teenager, her mother Nia finally returns to the island.
27-year-old Sakumi Shimura lost the last 10 years of her memory from a car accident. Sakumi can only remember events up to when she was 17-years-old, but she accepts her fate and tries to stay positive. Nevertheless, Sakumi is bothered by the loss of her memory. She tries to remember with the help of Yoshihiko, who thinks of himself as her boyfriend and her friend from their high school days.