Synopsis

This work, based on the novel of the same name by Uchiumi Bunzo, is a story about the bonds between parent and child through a severely disabled child. It depicts how adults carrying deep emotional wounds from their past find a new direction in life after encountering “just one small life” desperately living in the present.
 
After the brutal murder of private investigator Yonemoto, lone-wolf detective Satake is asked to investigate the case as a courtesy – joined by his assistant and apprentice, Satoko, a single divorced mother.

As the investigation progresses, they uncover a newborn kidnapping case that occured nine years prior, which Yonemoto was investigating in his final moments. The boy in question is severely disabled, and now lives with his father (Kudo Kankuro).
Despite living with a severe disability, he has survived a life shaped by extraordinary and unpredictable circumstances.
 
A man who turned his back on his family.
A woman abandoned by her daughter.
A man who made his child his only reason to live.
A woman who could not love the child she gave birth to.
 
This one small life, described as “a miracle just for being alive”, begins to move the hearts of these adults, who struggle and suffer in a reality with no escape.