The narrative primarily follows Kiroranke’s group as they navigate the treacherous Karafuto (Sakhalin) region.

The group encounters the Uilta tribe after Hyakunosuke Ogata accidentally kills one of their reindeer. To make amends, they must assist the tribe in a hunt, providing a window into the Uilta's indigenous customs and hunting techniques.

It details the specific ways Ainu and other indigenous groups, like the Uilta, navigated borders and were often caught in the crossfire of larger national conflicts.

Despite the looming danger, the episode maintains the series' unique brand of humor: