Each rate tells you a different part of the same story. (ifsautoloans.com)
The single player and co-op missions are all theoretically part of the same story, though the co-op quests won't actually affect the storyline. (snackbar-games.com)
In the case of Final Fantasy X and its fanatic follow - up Final Fantasy X-2, their place in time and position in Square - Enix's history are symbiotic parts of the same story. (digitalchumps.com)