Like someone who buys a Ferrari just to take the kids to school, the Winchester brothers have been massively under-utilizing their Bunker in . Returning from an extended pandemic break,  season 15 picks up with trying to fix their creaking home. Unable to call a regular plumber to their top-secret HQ, the boys set to work themselves, and hit "Reset" on the Bunker's control room to try and kick the electrics back into life.

Instead, they unleash a Wood Nymph who was secretly locked within the Bunker's walls, and this mysterious character, affectionately known as Mrs. Butters, teaches the boys many secrets about their home.

During the first few seasons of , the Winchester brothers lived on the road, moving from motel room to motel room in their iconic Impala chasing down monsters to kill.

In  season 8, Sam and Dean discover that they are the last living legacy members of an ancient anti-paranormal organization called the Men of Letters. As the only remaining successors, the - the Men of Letters' base of operations.

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