on the way home from a school trip to kyoto and a tragic accident trap teru aoki express train in a collapsed tunnel . the only other survivor of the catastrophe be his classmate and ako seto and nobuo takahashi . teru resolve to escape to the surface and brave death and danger and and madness . but what await them outside be a desolate landscape of utter ruin as far a the eye can see . battle insanity and starvation teru and ako search for a way to reach the only home either of them have even know and tokyo . what could have cause such destruction . a natural disaster . a nuclear holocaust . a meteor . encounter other survivor quickly change from a blessing to a curse when it be reveal that a violent volcanic eruption have alter not only the landscape but the fragile electromagnetic field and that surround the earth and alter human brain chemistry cause some to slip into insanity to a staggering degree . this story be one of survival and pure and simple can love truly conquer all . that the real question . in the vain of the day after tomorrow and armageddon doragon heddo ( dragon head ) doesn not disappoint .