Worlds collide as Star Fleet is exposed to the galaxy spanning empire that is the Imperium of Man. The Imperium expects a brief Crusade. Starfleet thinks the Imperium is the worst their respective galaxy has to offer. Both are in for rude awakenings as cultures, technologies, and empires clash. Note: This will not be a UvU steamroll they will be somewhat balanced according to fluff

Near the conclusion of the events of Heaven's Feel, the attempted destruction of the Great Holy Grail causes an unforeseen outcome that has led Shirou, Rin, Sakura, Illya and the servant Rider to be transported to a different dimension. How will they fare in a world filled with Grimm, Dust and Hunters?