Sam and Dean Winchester seek out the person or force responsible for their mother's death and their father's disappearance while investigating strange occurrences across America.

Sam and Dean Winchester seek out the person or force responsible for their mother's death and their father's disappearance while investigating strange occurrences across America.

How do you deal with a fallout of Heavenly proportions? With the angelic Host's descent to Earth. Sam and Dean now face a world inhabited by thousands of powerful beings which soon form their own chaotic agendas. Before tackling the threat of the "loose nukes" roaming the globe, the Winchesters engage in their most personal conflict yet. Meanwhile, Castiel finds he's more vulnerable - and yet capable of more humanity - than ever. As the threat escalates,...

Brothers seek out and fight supernatural forces in an attempt to find their mysteriously missing father and the person or force responsible for their mother's death.