Dean and Sam are left reeling from the loss of so many allies and family members and their new responsibility to 'raise' Jack, with Sam willing to give the boy a chance while Dean is immediately concerned due to his heritage. In the other world, Lucifer keeps Mary alive as a hostage to trade for his son when he returns home, but finds himself confronted by the alternate Michael, who has killed his Lucifer and won the war. Although Dean becomes increasingly bitter at their recent losses, he gains a new sense of hope when Jack unintentionally brings Castiel back to life. Things become complicated when Men of Letters Arthur Ketch is revealed to have escaped death through a spell he received from Rowena, Ketch taking Castiel and a weakened Lucifer prisoner after Lucifer escapes back into this world when Michael tries to use his grace to create a portal so that he can conquer the other reality.