After the Winchesters express doubt about him, Chuck transports them back to the Bunker where he brings in the spirit of Kevin Tran (Osric Chau) to vouch for him. Chuck then sends Kevin to his final rest in Heaven. Chuck explains that he had once been much more hands-on with the world, but didn't seem to be making a difference so he left the world to find its own way, but he has returned to face Amara. At the same time, Amara continues to torture Lucifer, and she contacts Dean to send a message to God about Lucifer's state. While this is going on, another of Amara's fogs wipes out a whole town but results in a man named Donatello being called as a Prophet. As the Winchesters go to meet with Donatello, Metatron contacts them and reveals that Chuck intends to sacrifice himself to Amara to stop her destruction of the universe. After Dean fails to convince Chuck to stop his plan, the Winchesters team up with Metatron and Donatello to rescue Lucifer. To distract Amara, Dean meets with her, and Amara suggests that he give up his humanity and become a part of her instead. Eventually Amara realizes that Dean has betrayed her and departs to stop Lucifer's rescue. Donatello is able to lead Sam and Metatron to Lucifer, who agrees to put aside his differences with God to battle Amara. Metatron frees Lucifer and stays behind to hold off Amara when Lucifer can't teleport them out. After Metatron's attack fails, Amara implodes him into nothingness. Amara nearly kills Sam bella , Lucifer and Donatello, but Chuck teleports them back to the Bunker. There, Lucifer and Chuck greet each other for the first time in millennia before Chuck heals Lucifer's injuries. The Winchesters send Donatello on his way, and Dean informs Sam of Amara's plans for him