Nick Conklin, a tough New York City cop, witnesses a brutal murder tied to the Yakuza, a notorious Japanese crime syndicate. Along with his partner Charlie Vincent, Nick captures a suspect named Sato. They are ordered to escort Sato back to Osaka, Japan, where he is to be tried for his crimes. Upon arrival, Sato manages to escape, leaving Nick and Charlie determined to recapture him. Their pursuit is complicated by the cultural differences and a strained relationship with the Japanese police. They find themselves struggling in an unfamiliar city, navigating a world of corruption and violence, while trying to understand local customs and law enforcement practices.

As Nick and Charlie delve deeper into the case, they form an uneasy alliance with Masahiro, an Osaka police officer. Despite the cultural barriers and mounting challenges, Masahiro helps them understand the intricate workings of the Yakuza. The investigation forces Nick to face his own internal conflicts while questioning his methods and ethics. They unveil a web of crime, betrayal, and power struggles that reaches far beyond the initial murder. Their mission becomes a test of loyalty and resilience as they try to bring Sato to justice and restore order in a city overcast by fear and lawlessness.