The Arcana

They are the Arcana -- human beings plucked from their lives to battle an invading army of demons. Named after the major trumps of the tarot, they are endowed with magical powers reflected within the cards. They are Justice, the Hermit, the Chariot, the Moon, the Tower. Conscripted into duty and held prisoner within a towering enclave, they are sent forward against their will to combat an onslaught of monsters the armies of the world cannot stand against.

And the price they pay is great.