Resurrection. After enduring unspeakable torture, Dean escapes from Hell, rescued by an all-powerful creature he's never seen before " an Angel" a warrior of God who recruits Sam and Dean in Heaven's battle against Hell. And there are whispers that a certain fallen angel will soon be freed from his prison deep in Hell: Lucifer. If Sam and Dean can't stop it, if Lucifer walks free, he'll bring on the Apocalypse. Meanwhile, the Winchester brothers reunite and hit the road, battling the supernatural wherever they go. They encounter demons, spirits, Dracula himself and even a drunk, heavily armed seven-foot-tall teddy bear. All the while, the ultimate war draws them into its horror throughout this enthralling six-disc, 22-episode Season Four set. Caught between Heaven and Hell, between God and the Devil, the Winchester brothers must battle for the future of humankind.