In the future, the world has been engulfed in the bitter cold of an ice age. And yet, Tokyo is surviving with its use of geothermal heat pipes to keep the city habitable. Within this frozen city, So’un and Ethica make their living working for the Karasuzumi Living Dead Stalker Office; contract killers who spend their working days executing necromancers and their undead minions. On one such mission, they discover a mysterious girl who had been kidnapped by a necromancer for reasons unknown…