Kiroranke and Sugimoto's groups are now near each other on the Strait of Tartary ice floe, and a number in incidents happen in quick succession. Shiraishi is relieved to find Sugimoto still alive, but is surprised to learn from him that Ogata shot Sugimoto and Wilk (Nopperabo). While searching for firewood, Ogata presses Asirpa to tell him what she remembered of her father's secret code and tells her that Kiroranke arranged the murder of Nopperabo...