Plot!

The future has made the job of a hunter a hard one.

It's been years since the Winchesters died, years since they averted the Apocalypse and sent the Leviathans packing all the way back to purgatory. The stories of how they did what they did vary, but amongst hunters the Winchesters will always be wraiths of truth and myth. Yeah they lived, but it was so damn long ago nobody remembers half of what happened. At least not truthfully.

The big problem now isn't the monsters. No, it's the people.

Somewhere along the winding road of time someone let the secret slip. Yeah people have always been aware of what goes bump in the night on some level, but this is different. This is full on knowledge. All the shadows of the night, the beasts that hung in alleys. They're out of the closet and with them...well lets just say the shit has hit the fan.

We have your bleeding heart activists that don't understand that yeah a siren can think and pass for human, but they're still going to want to kill you. They don't get that these are monsters and need to be dealt with as such.

We have the wannabes. People who think that becoming a monster is as easy as changing clothes. Or that the monsters will actually go through on their promises.

And then you have the amateurs. People who fashion themselves as hunters after they get a car, some guns, and couple of dusty old books. They are the worst. Why? Cause they follow you. They stumble onto a case and with their blundering naivete get pretty much everyone including themselves killed.

Hunting is now regulated. The government has to issue a permit or the person hunting can actually be charged with murder. If you're caught with hunting gear in your car you might as well give up on ever seeing daylight again.

Hunting has changed. Big time. So when Castiel comes back to earth to warn the world about the cage deteriorating. Is there anyone in existence with the skill to solve the problem?