After Castiel captures Pestilence's ring and Death hands his ring to Dean, both Bobby and Dean reluctantly decide to go with Sam's plan – that is, for Sam to agree to being Lucifer's vessel, then jump into the cage trapping them both in Hell. Upon arriving in Detroit, Sam begs Dean to go live a normal life with his old flame Lisa Braeden and says his goodbyes to Bobby and Castiel. He then proceeds to confront Lucifer, who reveals that he knows about their plan. Seeing no other options left, Sam says yes anyway. A bright light shines and Dean looks upon an unconscious Sam as he opens the portal to Lucifer's prison. Although "Sam" says that he has Lucifer under control, it is shown that Lucifer was just taunting Dean. Lucifer closes the portal and takes the rings before disappearing. At an unknown location, Sam continues to fight Lucifer internally for control over his body. While talking through a mirror, Lucifer tries to persuade Sam to embrace their union by slaughtering demons that were watching Sam throughout his entire life.