The tower of the Master Conjurer Shamos Monjeur has been invaded by undead. How have they bypassed the magical defenses? Have they killed the Master Conjurer?
You don't really care. You were abducted from your home world by the wizard's magic shortly before the attack, so your only regret is that now you might not have a chance to take your revenge upon him. Still, when one of the surviving apprentices comes to free you from the magic circle holding you captive, you realize you must all cooperate to survive the undead onslaught, and to find a way back home.