In Supernatural season 11 the Winchester brothers continue the work begun many years ago. Last season, they have experienced a collision with Death, but was released Darkness. Sam realizes his guilt and understands that he has to fix it. He and Dean have to forget about the old grievances and once again become a cohesive team for the fight against an ancient evil. But the Darkness is an evil that God overcame many millions of years ago before the events described in the Bible. Now, the Winchesters need His help to learn how to do it again. Darkness opens the door not only for God, but for Lucifer, too …