did you have trouble understanding the full storyline at the start or just me?
Yeah it is even more convoluted than the usual Fate entry, but I think it boils down to the scope and ambiguity of this entry.
It basically takes every rule, every assumption and everything you thought you knew about the Holy Grail wars and just throws it straight out the window. You basically have the 7 classes of Servamts x2 like in Apocrypha but without the distinction of the Black and Red "factions", which on its own makes it even more complicated.
Since explained in very simple terms, this is a Holy Grail War that has large in part been unnaturally and forcefully initiated by the U,S Government's operations.
Now I don't know all the intricacies and details around how they went about it, though I assume a lot of it will come to light over the course of the series; but as the very fundamentals of which the holy grail wars is built on has been perverted, so too has the game rules allowing things that ordinarily impossible to now be very possible.
The Mercenary guy who was told by his summoned "servant" that he was to become the Lancer himself is just one of the examples of something that ordinarily wouldn't happen, and the "servant" that he actually summoned is as far as I'm aware is a unique class called the "Watcher". Honestly I use the word servant loosely as I had (and still do have) a hard time wrapping my head around what or who it is, but it's either which way one of the most blaring examples of rules defiled.
Not that rule breakers haven't appeared in other titles before, but this one is just on a whole different scale and magnitude.
Though most of all I know is that the lineup is fucking stacked, and that shit is gonna go down. I haven't spoiled myself much in terms of the plot, thankfully