The story takes place during the "Freedom Shield" peacekeeping operation of the East Asian Community. They encountered a bizarre incident while performing a mission on Garland Island: they discovered a massacred village, and the only survivor was a little girl who drew strange symbols. Then the team encountered unknown signal interference, and recruit Li Zhengxun suddenly went insane and claimed to have heard "whispers from the underground." After examination, medical soldier Nguyen Van Thai believed that he might have been affected by nerve gas. On the way back to the base, Wu Qing's sniper rifle unexpectedly rusted and corroded in the humid environment. These events hint at the presence of supernatural forces on Garland Island...
