Transported to the unfamiliar realm of Grimgar with only fragmentary memories and their names, a band of strangers grapple with fear, survival, and instinct as their primary companions. Forced to enlist as soldiers in the Reserve Army to safeguard Grimgar from threats, these individuals form an unlikely party after being left behind by the more capable recruits. Led by the charismatic Manato, the group includes Haruhiro, a jittery thief; Yume, a jovial hunter; Shihoru, a timid mage; Mogzo, a gentle warrior; and Ranta, a boisterous dark knight. In this harsh world where there are no second chances, they must learn to cooperate and fend for themselves, realizing that survival hinges on unity and quick thinking. Bound by the thin line between life and death, their journey is not a mere game but a relentless struggle for existence.