At a time when the industrial revolution was carrying the world into the modern age, a horde of undead monsters suddenly appeared. They could not be killed unless their hearts, which were protected by a layer of iron, were pierced. These undead, which would later be known as "Kabane," exploded in population until they finally overran the world. The people of Hinomoto, built fortresses known as "stations" that have allowed them to survive the threat of the Kabane. Ikoma is a young steamsmith living at Aragane Station, working on developing a unique anti-Kabane weapon called a "piercing gun".

[Source: Crunchyroll]

Film compilation film of the first half of the TV series.

Film compilation of the second half of the TV series.

Sequel taking place half a year after the story of the original television anime series.