Supernatural Season 13 (2005)

Two brothers were trained by their father, a supernatural hunter, to kill the wicked things that roam the earth. When they were young, a supernatural demon murdered their mother. The father, hell bent on revenge, has disappeared while tracking the beast who killed her. Because of the father's recent disappearance, the sons are forced to roam the earth trying to find him and killing a host of demons, wendigo and other supernatural entities along the way.