About Episode

Chuck begins to narrate the life and times of the Impala and the boys life inside of it. Chuck reveals their time spent in the Impala and how they made it their home throughout the years before and after they began hunting. Remembering a comment made by Lucifer in the future, Dean realizes that the fallen angel is in Detroit. Sam and Dean confront Lucifer, who knows of their plan to use the Horsemen's rings to trap him back in his cage. Despite this, Sam offers himself as a vessel, hoping that he can overcome Lucifer's control and throw himself into the prison. Lucifer is too strong, and Sam disappears in his body. As Lucifer tries to make Sam happy by killing the demons sent by Azazel to manipulate him during his childhood, Dean learns from Chuck the time and location of the final battle between Michael and Lucifer. The following day at the battleground—Stull Cemetery in Lawrence, Kansas — Lucifer tries to talk Michael out of fighting, but he refuses. However, Castiel interrupts the fight by banishing Michael with holy fire. An angry Lucifer kills Castiel, and then snaps Bobby's neck when he shoots him. He then starts brutally beating Dean, but stops when he notices an old army man of Sam's inside the Impala revealed earlier during Chuck's narration. Sam remembers his life growing up with Dean, and manages to take control of his body. He uses the rings to reopen the door to the cage, and prepares to jump inside. Michael returns and tries to stop him, but he too is pulled into the pit while grappling with Sam. Castiel, resurrected again as an angel, heals Dean and brings Bobby back to life. He returns to Heaven, hoping to bring order now that Michael is gone. As Dean attempts to move on, he seems to turn his back on hunting and returns to Lisa. Chuck smiles after finishing his narration of the story, and vanishes into thin air. Later that night, a streetlight flickers out and Sam is revealed outside Lisa's home, looking in the window at the "family" eating dinner together.