Originally planned for late 2018, the feature film for Kabaneri of the Iron Fortress: The Battle of Unato arrived with a May 10th, 2019 premiere in Japan.
While the last of humanity has retreated into fortress-like stations connected by armored trains, some remain as hopeful as Ikoma.
Servicing the trains for a living, Ikoma uses his spare time to build a weapon that could defeat the Kabane.
But an unexpected turn of events puts him in a situation that will test not only his weapon but his own humanity.