A severe blizzard causes a city-wide blackout, adding to the obstacles the team must overcome in order to solve a murder case that could be linked to a potential viral outbreak. Booth and Brennan have a conversation about their relationship while trapped in an elevator, and Angela and Hodgins get worrisome news about the health of their unborn baby

The remains of a mythbuster television show host are found in the wilderness appearing to have been killed by the mythic Chupacabra, a reptile-mammal hybrid creature whose existence has not been confirmed. Meanwhile, recovering alcoholic Vincent Nigel-Murray makes amends with each member of the team and makes some surprising confessions.