The thrilling and terrifying journey of the Winchester brothers continues as Supernatural enters its tenth season. Sam (Jared Padalecki) and Dean (Jensen Ackles) have spent their lives on the road, battling every kind of supernatural threat. Over the years, after dozens of bloody adventures, they have faced everything from the yellow-eyed demon that killed their mother to vampires, ghosts, shapeshifters, angels and fallen gods. They even came face to face with Lucifer and the Four Horsemen in averting the Apocalypse. With the help of allies -- both human and supernatural -- theyve discovered that every threat they vanquish opens a new door for evil to enter through. In the shows ninth season, their supernatural hunting expedition led them directly into two brand-new power struggles: the first involving the King of Hell and a Demon Knight after his throne; the second centering on an unbalanced angel whos taken over Heaven and exiled legions of volatile angels down to Earth. With the help of their protectors -- the fallen angel Castiel (Misha Collins) and "devil-you-know" Crowley (Mark A. Sheppard) -- Sam and Deans lifelong quest to set the world right will take everything theyve got ... and a bit more. And now, when the unthinkable happens to Dean, the Winchesters must find a way to make things right before their world explodes.