While the Civil War rages on, President Abraham Lincoln (Bill Oberst Jr.) must undertake an even more daunting task: destroying the Confederate undead. When Lincoln is apprised of rumors concerning an attack on a prominent Confederate stronghold where only one man returned barely alive, he questions the survivor and discovers the soldier has an illness that seems to bring corpses back to life. Taking it upon himself to deal with the matter, he personally leads a team of the newly established secret service on a mission to eradicate the infected fort.