The wandering knight, Bedivere, reaches the end of his journey. It is A.D. 1273 in Jerusalem. The Holy Land has been transformed into a massive desert and its people have been forced out of their homes as three major powers wage war with each other in this wasteland. The Knights of the Round Table come together to protect the Holy City and their Lion King. With the whole of his kingdom summoned into a strange land, Ozymandias, the Sun King, quietly plots against the tyranny of this bizarre realm. The mountain people, protectors of those who were stripped of their land, await their chance at rebellion. In order to fulfill his mission, Bedivere heads for the Holy City where the Lion King rules. There he meets humanity’s final Master, Ritsuka Fujimaru, who has come to Jerusalem, accompanied by his Demi-Servant, Mash Kyrielight, in their quest to restore human history.

An animated spinoff from the Mobile Suit Gundam: Iron-Blooded Orphans, this feature length film compiles the ONA footage from the "Mobile Suit Gundam: Iron-Blooded Orphans – Urðr Hunt" mobile game.