After escaping a cult suicide, a paraplegic hospital patient is tormented by malevolent spirits and cursed to kill whomever hears her voice, unless she offers up the soul of her innocent nephew in place of her own.

As Abraham Lincoln labors over the Gettysburg address, the importance of which he is fully aware, he learns that a menace from his past has returned, threatening to tear the already fractured nation to pieces. He must journey behind enemy lines to face an foe far more fearsome than the Confederate army: the walking dead.