Before the New Year, Jared Padalecki as Sam Winchester and Jensen Ackles as Dean Winchester had their mother taken from them by a mysterious and evil force. Later, their father, John Jeffrey Dean Morgan Grey's Anatomy, raised them to be warriors. He let them know that supernatural evil forces grow in dark corners and backwaters of America, and he also taught the children how to kill them. Sam and Dean wandered around, driving their Chevrolet Impala, cruising along highways. They fought tenaciously against supernatural evil and searched hard for the devil that took their mother's life. They finally caught up with the devil. After a bloody battle, the devil killed John and escaped again. With the sadness of their father's death buried deep in their hearts, the brothers set out again on the hunt for the devil. At the same time, Sam encountered various troubles. Through clues, they uncovered the conspiracy of the devil they were hunting - it wanted to release thousands of devils from hell to form an invincible demon army and made Sam their leader. Shocked by this conspiracy, the Winchester brothers fought the devil. In the climactic battle, the two brothers finally defeated the devil but paid a heavy price. They were unable to stop this demon from releasing powerful ghosts from hell. An even more shocking turn of events was that Sam was killed in the battle. Losing his brother and no longer able to continue, Dean made the ultimate sacrifice. He summoned a crossroads demon and traded his soul to redeem his brother's life, but he could only live for another year. Now, Sam and Dean will have an all-out battle with the demons. As they try to curb the peak of demonic activities, they are still traveling through the countryside, fighting various supernatural evils wherever they go - dwarves, curses, life vampires, witches, evil souls, and even Christmas haters filled with resentment. Dean's life is slipping away, and in a year, hell will open its gates for him. Meanwhile, the aftermath of the dead demon's plan is still affecting Sam, making him gather the demon army and become their leader. In his struggle against his own fate, Sam will uncover black secrets that have been buried for many years about his own past and the entire family's history, and find a way to save his brother's life.