In the early twentieth century, Russo-Japanese War veteran Saichi “Immortal” Sugimoto scratches out a meager existence during the postwar gold rush in the wilderness of Hokkaido. When he stumbles across a map to a fortune in hidden Ainu gold, he sets off on a treacherous quest to find it. But Sugimoto is not the only interested party, and everyone who knows about the gold will kill to possess it! Faced with the harsh conditions of the northern wilderness, ruthless criminals and rogue Japanese soldiers, Sugimoto will need all his skills and luck—and the help of an Ainu girl named Asirpa—to survive.

On the Hokkaido frontier, a war veteran and Ainu girl race against misfits and military renegades to find treasure mapped out on tattooed outlaws.

Set immediately after movie "Golden Kamuy," the hunt for the escaped prisoners with the tattoos that collectively reveal the location of hidden gold is in full swing. Retired war veteran Sugimoto Saichi and Ainu native Asirpa are in the hunt to find the gold before others do so and their journey to find the gold nuggets enters a new phase.