The End

Dean travels five years into the future and is attacked by zombies who were turned into monsters after being infected with a demonic virus. Dean soon learns that the virus is Lucifer's tool to destroy mankind.

Full Synopsis
After 16 hours of driving, Dean arrives at a hotel, rebuffing a Jehovah's Witness on the way inside. He's talking on the phone to Castiel, who wants to come over, but Dean tells him no, needing some time to rest after the lengthy drive, but instead letting him know where he's staying and telling him to see him in the morning. While he's sleeping, Sam calls and tells Dean that he is Lucifer's chosen vessel and says he wants to rejoin Dean in the battle of the Apocalypse, but Dean tells Sam that they are better off apart.

Later, Dean awakens five years in the future in an abandoned city and is attacked by humans who have been infected with a demonic virus. Zachariah appears to Dean and explains that this is the world that exists as a result of Dean saying no to being Michael's vessel. He goes to Bobby's house and finds a picture of a group of men holding guns, including Castiel. Using the photo Dean traces it to a campground and meets up with Future Dean, who tells him that the virus is the Devil's endgame for destroying mankind. Future Dean says that Sam is dead and that before that the two hadn't spoken for years.

Future Dean acquires the Colt and plans to use it on Lucifer, who, much to Dean's dismay, is inhabiting Sam, and that the day Sam "died" was the day he said yes to Lucifer. Future Dean wants Dean to go back to his time and say yes to Michael to prevent all of this from happening and to save Sam. On the mission to kill Lucifer, he kills Future Dean and tells Dean that no matter what choice he makes, he will "always end up here" five years. Zachariah brings Dean back to the present and tries once again to convince him to say yes to Michael, but he says no. Just as Zachariah is about to threaten Dean, Castiel teleports Dean away. Dean calls up Sam and they reconcile so that they can begin hunting together again.

Major Characters
Dean Winchester

Zachariah

Future Dean

Future Castiel (turned human)

Future Chuck

Lucifer in 2014 (possessing Sam Winchester)

Castiel

Featured Music
"Do You Love Me" by The Contours