Oh. My. God.
Those were the words that rang in my head over and over as the closing credits of Supernatural's episode "99 Problems" rolled on my screen. What a poignant ending. If he wasn't already, this is probably the episode that forever endeared Dean Winchester to all Supernatural fans.
Dean is frantically driving the Impala, carrying an injured Sam away from a horde of demons. It looks like they are in the clear when suddenly they are faced with a flaming truck blocking the road. The demons break into the car and are about to drag the Winchesters out when suddenly other people arrive. They spray the demons with holy water from a fire truck and start what seems to be an exorcism ritual over a loudspeaker. One of them approaches and warns them that it’s the Apocalypse.
Needless to say, the brothers are shocked. They show the man, Rob, and his friends the contents of the trunk of the Impala to convince them they are on the same side. Their saviours take the Winchesters back to town, in Blue Haven (Minnesota), heavily barricaded by both physical obstacles (cement blocks) and demon-specific ones (demon traps). They enter a church where the Reverend is performing a triple wedding (apparently, the town has had eight weddings so far that week) and where all the guests are openly carrying shotguns. After the ceremony is over, the Reverend spends some time with the Winchester brothers and takes them to the church basement, where the townsfolk (including children) are making various demon-fighting weapons.
When the brothers meet Reverend Gideon’s daughter, Leah, they realise that she is a prophet, and she is the one who has been receiving messages and guidance from the angels to help fight the Apocalypse. A little concerned by this unusual turn of events, Sam leaves a message for Castiel on his voicemail (“I left him a message. I think.”). On the one hand, the brothers are concerned that the angels are using the townsfolk to do their dirty work, but as Dean puts it, as least they are “running to the exits in orderly fashion.”
The church bell rings and the bartender, Paul, tells the brothers it means Leah has had a vision. There is going to be another attack, and a team is put together, led by the Reverend and assisted by the brothers. The team defeats the demons (in a great fighting sequence) and the brothers can’t help but appreciate the fact that they are not alone (“I guess that’s what it’s like.” “What?” “Having backup.”).