The year 2010 A.D.
Romani Archaman has been posted to Chaldea.
There, he becomes the primary doctor for a young girl.
Mash Kyrielight, Chaldea’s second successful summoning experiment, is interested in the word "Senpai". The interaction between the two gives Mash a reason to hope.
That hope becomes a wave, and starts to spread.

That is your story, the story of a normal “somebody”.
The story at the beginning of a journey that weaves the future.

[Source: official English website]