Na fronteira de Hokkaido, um veterano de guerra e uma garota Ainu lutam contra rebeldes e militares desertores para achar um tesouro cujo mapa está tatuado em criminosos.

Kenji Yamamoto's father died from using a stimulant drug. His life fell into desperation. Kenji then joined a crime syndicate. There, he meets the gang's boss Hiroshi Shibasaki. Hiroshi reaches out to Kenji and they developed a relationship like father and son. As time passes, Kenji has his own family.

In 1933, a young naval officer and math prodigy uncovers a conspiracy regarding the construction of Japanese warships for the ongoing World War 2.