Sorry but there is no story, only a few guns have a "lore" and only by the small description inside the game, and if the lore isnt in the game, if i need to; exit the game, login in a external place outside of the game, and read a "grimoire" . Which means no one cares of what the hell you are doing, while you are doing. Extended material like the grimoire should be used to enrich the lore , not " put all the story or lore of the game" outside of the game.