John Burgoyne awakens from a Halloween party, with a hangover and a dead cell phone, on the first day of the End of Days. He's desperate, on the run, and fighting for his life. After a violent coup, the Father, the figurehead of the Holy Covenant and the commander of a new military order, pursues John through the post-apocalyptic wreckage of Cleveland, Ohio, in search of the hidden knowledge he believes John holds. Burgoyne escapes and aligns with the resistance until Father orchestrates a final showdown.