Episode Description: Beware, spoilers! To read - hover over the text.
Two brothers Sam and Dean Winchester witness the tragic and mysterious death of their mother Mary. Finding out that Mary killed a supernatural being, boy's father, John, was adopted for his quest, at the same time teaching their sons to fight with the evil spirit. Years pass, and Sam decides to leave the hunt and went to College. However, some time later, his regular life is suddenly disturbed by the appearance of the brother, who said that his father was gone hunting, and asks for help Sam in his quest.