Takemura Fumiya is deep in depts and but hardly trying to make ends meet. That is until one day Fukuhara Aichirou, the man he lent money from, comes to offer him an opportunity to erase all of his depts in one go: Fumiya should accompany him during a walk in Tokyo. There is no time limit, the two of them have to walk until Fukuhara is satisfied. Confused but helpless, Fumiya accepts, and he soon learns the reason of this travel. Fukuhara has commited a horrible crime and plans to have one last journey before turning himself in at a police station. While walking, they visit places filled with memories of both of their pasts, realizing the depth of life.