During a chaotic school trip, Yogiri Takatou wakes up to find his entire class transported to a different world. While he slept through the event, missing out on the special powers granted to his classmates, he and a fellow student are left behind as dragon bait. Unconcerned about his own life, Yogiri reveals his ability to instantly invoke death, a power that could easily defeat the Level 1000 monster threatening them—if only he can manage to stay awake long enough to use it.