Natsumi wants to become a photographer. She takes a bike which her late father left behind and goes to a forest to find a firefly she saw with her father. In the forest, Natsumi meets old mother Yasu and old son Jizo. They run a general store. Natsumi learns how to live in nature from them. She has happy summer days there. One day, Jizo tells her that he became estranged from his son in the past.
Kurumi suddenly gave up opening a cafe with her friend. She hears that her grandfather Takeshi collapsed and goes to visit him in her hometown of Sendai. Takeshi entrusts Kurumi to open a cafe which closed temporarily due to the earthquake, but Kurumi doesn't know what to do. Takeshi hopes Kurumi finds her own way to live. There's not much time left for Takeshi and Kurumi.
In central Tokyo, a young man, Sosuke, aspires to be a manga artist. His current work is about a battle between a hunter and a Japanese wolf. He can’t draw the extinct wolf well and struggles to develop the story. One winter’s day, Sosuke finds an animal’s skull while digging foundations at a construction site and takes it home. Is it a Japanese wolf’s skull?
