About Episode

Dean begins to think the only way to stop Lucifer is to say yes to Michael, but the angels decide they don't need him anymore. Instead, Zachariah uses Dean and Sam's half-brother, Adam, to serve as Michael's vessel as he is related to the Winchesters by blood. Castiel rescues Adam as he revives and brings him to see his brothers and Bobby. But Adam has no problem being Michael's vessel as the angels promised to reunite him with his deceased mother and Sam tries to talk him out of it. Since Dean still has the intention to accept the archangel, Castiel and Sam lock him in a cell but Dean tricks Castiel into releasing him and escapes. Adam is convinced by Zachariah to act his part and he leaves voluntarily. Dean is chased down by Castiel and the angel knocks him unconscious and takes him back. Upon going with Zachariah, Adam discovers that the angels have fooled him into tricking Dean to become Michael's vessel. Sam trusts Dean not to give himself up to the angels and releases him to help rescue Adam. Castiel goes inside the warehouse and confronts a group of angels, using incantations on his body to banish himself and the angels away while Dean and Sam enter. They attempt to take Adam with them but are confronted by Zachariah. The angel tortures both Sam and Adam to force Dean to say yes. Dean relents and tells Zachariah to summon Michael. However, Dean reveals he's made a few conditions in order to have Michael possess him, with the first being Zachariah will be killed by Michael. To be sure, Dean surprises and kills Zachariah himself. As Michael descends, the three brothers flee but Adam is trapped inside. Dean is unable to go back in to save Adam due to the searing heat and light, and when he enters the room moments later, the room holding Adam has disappeared. Later, Dean apologizes to Sam for his decision and tells his brother they will take the fight to them, whether they be angels or Lucifer.