Chiaki Miura is the eldest of three brothers. After the death of their father, Chiaki starts job hunting in order to support himself and his siblings. However, despite his diligence, he cannot seem to find any employment. Refusing to give up, each day he promises his frustrated brothers that he will one day provide for them.
On his way to an important job interview, Chiaki witnesses a young woman being sexually assaulted on the train. Despite being in a rush, he decides to intervene. Through this act of heroism, Chiaki unknowingly begins an odd journey that will not only turn his life upside-down, but will also force him to call into question his own definition of justice.