Sazabi wrote...
a nonstop fight? sounds good
Pretty much, from what I've read it's supposed to just about cut out most of the non key events and fights, still get to see the
Gilgamesh Ilya scene, still some stuff between Shirou and Rin, Lancer fighting Archer, Archer fighting Shirou, the whole Caster ordeal and torturing Saber,
so pretty much key events that everyone wanted to see animated, but not as much backstory so people who don't know FSN won't like the movie from what I've heard because....well they won't really know wtf is going on.
I haven't really found anything that concretely says all this but the story I hear everywhere is pretty much the same, you played the VN you'll soil yourself at the awesomeness of it, if you don't know fsn you'll enjoy the fights but the plot will be impossible to understand.