Giri/Haji plot
Kenzo Mori is a Tokyo police detective who travels to London to search for his long-lost brother Yuto. Yuto works for the Yakuza and is wanted for the murder of a Japanese businessman, a crime that could lead to a gang war. With the help of a Japanese-British tout who guides Kenzo through London, the mystery slowly begins to unravel. His family's honor and the fragile peace between the warring gangs in Tokyo are at stake.