After serving prison time as a scapegoat in a yakuza conflict, Tatsu (Yamaguchi Yoshiyuki) is met upon release by his sworn brother Ryu (Yasukaze Motomiya), who reveals that their gang was dissolved by a mysterious man named Gizmo and everyone has gone their separate ways. Ryu proposes they run a ramen shop together, Ryu Hanten. But trouble follows when former rivals Jin (Hitoshi Ozawa) and Kazu (Kazuyoshi Ozawa), whose gang was also disbanded by Gizmo, open a competing shop nearby called Ramen OZAWA. As a fierce ramen rivalry erupts, Gizmo’s sinister influence closes in once again.