25 years ago, the Nagiri Brothers—once feared nationwide—lost their family’s backbone when their father, Tsuyoshi Nagiri (played by Kim Sunjin), was suddenly assassinated. “Even as yakuza, we never strayed from the path of humanity. Everyone in the Nagiri family is our comrade,” were the words their father left behind. Carrying on his will, the second son, Kaname Nagiri (Choi Chul-ho), took over the Nagiri-gumi. However, just as the ex-Nagiri member-turned-politician Masashi Fukuzawa (Koichi Miura) is preparing for an election, and Danba Takeshi (Daisuke Nagakura), head of the Tanba-gumi under the same Doushinkai syndicate, is released from prison, a violent incident breaks out—triggered by the drug trade. When their youngest brother Minato (Seiji Fukushi), a respected figure in Osaka, falls into danger, the eldest, Shun Nagiri (Yoshiyuki Yamaguchi), steps in to save him. The brothers reunite and head to Kaname’s side—just as he’s about to clash with their former allies…

Under the vast, open sky of Uda City in Nara, three young strangers meet by chance - Sae, who has just been abandoned by her boyfriend who moved with her, Akari, who has come to find the infamous flamingos her best friend Kyon-chan once spoke of, and Ryutaro, who has never once left his hometown and spends his days living in tedium. Koe and Ryutaro decide to join Akari on her journey. The hearts of these three strangers mingle for only a day; a brief but memorable encounter that will follow them for life.