Ajin are humans that cannot die. Seventeen years ago, they first appeared on a battlefield in Africa. From then on, more of their kind are discovered within the human society. Their rarity in appearance means that, for experimental purposes, the government will generously reward anyone who captures one. In the present day, for what a certain high school student expects to be a typical summer holiday, his life is about to turn unexpected…
高中生永井圭在被卡車撞死之後卻奇怪地複活了。由此，他被判明為國內第 3 例不死的新人類·亞人。由警察以及亞人管理委員會進行的捕獲作戰開始。同時，處於管理下的第 2 例亞人在某人的幫助之下逃走。他們立刻展開了恐怖活動，開始對人類的複仇。去注視永井圭的動向吧。不斷重複地…