The year is 2010 AD. Romani Archaman has been posted to Chaldea, where he becomes the primary doctor for a young girl. Mash Kyrielight, Chaldea's second successful summoning experiment, is interested in the word "Senpai."

Fujimaru and company finally succeed in defeating Beast II, though this victory was won with many sacrifices. The entire group is wounded and battle-weary, and as they take stock of the aftermath, they see that Uruk itself is on the verge of collapse. What will the end of their journey bring them?