Hiroto Amamiya, a withdrawn boy with almost no presence, is killed with his classmates in a terrorist attack. The god Rodcorte reincarnates the class into another world with powerful gifts, but by the time he reaches Hiroto there is almost nothing left to give, and a second life on the world of Origin goes no better. Hiroto is finally reborn in Lambda as the infant dhampir Vandalieu, carrying the death magic of his past lives and growing up among undead, ghouls and other creatures of the night that ordinary people fear.