 Castiel decides he wants to help his fallen brethren find "direction" when he encounters an angel named Hael who requests his guidance.When Castiel contacts the Winchesters, however, Dean tells him to leave Hael and make his way the Men of Letters bunker where he will be safe from the angels hunting him.Following this, Castiel attempts to leave Hael behind but is captured by her instead whereby she reveals her plans to possess him.