In evil as ancient as time itself has arisen and taken root in New York City. Father Michael, the mysterious, undead defender of the Vatican, answers his centuries-old call to action while Cain, a malevolent wraith that feeds on fear and blood, has taken the life and form of the city's mayor and readies a demonic army to ignite the apocalypse. As Father Michael gains an ally, a young homeless man with unrealized supernatural abilities, and faces the possible spirit of his long murdered wife, he grapples with his sworn duty to God and the shreds of humanity left beating in his immortal heart. The time is ripe for Cain, and the fulfillment of 20th century prophecies crash headlong to fruition. Amidst a bone chilling blizzard, Father Michael must battle Cain and his horde of demons in a final showdown that could very well herald the end of mankind.