Dean goes to help Benny, who has run afoul of vampires guarding his Maker. Left alone, Sam thinks about his year of retirement, but is soon called back in when Dean calls him for help.
The Winchesters track down a killer and the investigation leads them to found footage of three college students investigating mysterious animal attacks.
After a series of brutal murders where the victims had their hearts torn out, the Winchesters track down and locate the killer. However, they soon realize that he's not the only killer and the others are still at large.
Crowley takes Kevin's mother hostage in an attempt to recover Kevin as he searches for the tablet. The Winchesters help Kevin rescue her, only to discover that she insists on joining them on their quest.
One year after their battle with the Leviathans, Sam finally finds his brother Dean, who reveals what happened to him and Castiel in Purgatory. They soon reunite with the prophet Kevin and learn about another Word of God... and an unbelievable opportunity.