Shirou Emiya, due to an unfortunate meeting with Rin's whimsical master is transported to an alternate universe where the fate of mankind is monitored by a futuristic organization known as Chaldea, and suddenly finds himself the last remaining hope for the survival of humanity. From crazy Servants to familiar faces, Shirou will have to navigate through time itself to save the day.

The long-separated lovers who reunited in Avalon awaken to the prologue of mankind's destruction. Prompted by the sight of Fuyuki in flames, they set forth to fight together once more.

Honestly, Shirou was beginning to think that he should be used to this; being unwittingly selected to take part in brutal tournament that he had no idea existed until he found himself in the middle of it. Then again, second times the charm, right?

When Louise Valliere performed her summons for her familiar, she certainly didn't expect for it to be a human! Strangely enough, the boy she summoned, Shirou Emiya, didn't expect to get summoned so soon. He hadn't even died yet!