You're told that the kingdom

You're told that the kingdom is being ravaged by demons, who wander around increasing their power by devouring the souls of men. Those without souls descend into madness, and the afflicted Fifa Coins end up randomly striking at the unaffected. Anarchy, chaos, and general destruction ensue. The more souls a demon consumes, the more power it gets...and a fully mature demon soul contains power "beyond human imagination." And as a final clincher, in case you were having doubts about the importance of your quest, the demon race is starting to spread from the original kingdom, and so the entire human race now faces extinction.

The intro cinematic lists the names of FIFA Ultimate Team Coins those who have failed, implying that you will have the option of playing as one of several classes in Demon's Souls, but we were thrown straight in with a warrior-type chap launching himself at what seemed to be the gates of this vast kingdom. We caught a brief glimpse of the character-customisation options, which seem to be fairly broad, but we didn't get a chance to play with them on this occasion.