It is 1965, a time of rapid economic growth for Japan and also a time when the people called Sanka, a nomadic band of outcasts, were fading away. Having arrived at his father’s countryside estate from Tokyo to focus on preparing for his high school entrance exam, a lonely 15-year-old named Norio (Rairu Sugita) encounters three Sanka, first teenage Hana (Naru Komukai), then her father Shozo (Kiyohiko Shibukawa) and her grandmother. Taken under their wing and drawn to their simple and rugged lifestyle, Norio begins to spend his summer days fishing in the rivers and catching snakes in the bush for food. He also witnesses how they are discriminated against by people like his authoritarian father who rejects their illogical lifestyle. With bad blood already existing between Norio and his father, and a hopeless desire to become one with the Sanka, Norio is forced to confront the cruel reality of his age.
Yukina, who works as a call girl in the burbs just north of Tokyo, was sexually abused by her stepfather. Her younger stepbrother Minoru was also abused, but meanwhile he harbors feelings for her. He gets suspicious about her line of work after finding her call girl business card, but he also worries that he'll become the target of bullying at school.
A seventy-year-old retired school headmaster informs his wife and daughters that he has Alzheimer’s disease. They are all concerned, but react differently due to their individual situations. The family watches as the husband and father regresses due to the disease and loses his memory. Interestingly, there are sparkling moments of his life of which the man will not let go.
Ko, a man in his late 30s, lives in the countryside with his wife and teenage son. Mitsuhiko, who runs a local car dealership, also stayed in his hometown. One day, their mutual friend Eisuke returns from a long military operation and their reunification brings back both pleasant and painful memories.