"Supernatural" is produced by the American WB TV station. It tells the story of supernatural phenomena, mostly from American urban legends and folk tales. A year later, Dean (Jensen Ackles), who was taken to purgatory for killing Dick, returned to the world with the help of a vampire named Benny. Benny helped Dean and Castiel fight various monsters in purgatory, and would also explain why Castiel (Misha Collins) abandoned Dean to face the demons of purgatory alone. Dean, who returned to the world, found that his younger brother Sam (Jared Padalecki) did not go to find him, but was very annoyed by a spark with a veterinarian. But soon, the two brothers shook hands and made peace. This time, they will fight the difficulties together again...