 The episode opens at Chernobyl nuclear power plant just before the disastrous meltdown. As the plant crew are evacuating, one of the guards claims the meltdown was caused by someone named Yaponchik, who is seen climbing over a fence and escaping just before the explosion. Several years later, the same man approaches a stranger outside a Russian Orthodox church in New York and shoots him in the face. Frank and Peter are then called in to help the NYPD, who are also receiving help from an officer of the Moscow police. The Russian officer dismisses the claims about Yaponchik, saying he s just a fairytale, but Frank notices things that tell him otherwise. As he digs deeper, he finds signs linking Yaponchik to the Anti-Christ in the Book of Revelations.