Sam and Ruby capture one of Lilith's minions to question her on Lilith's whereabouts. Once they get the information, Ruby convinces Sam to drink the other demon's blood in addition to her own. Sam gives in after hearing a supernaturally-altered voicemail from Dean in which "Dean" threatens to kill Sam the next time he sees him. Elsewhere, Zachariah explains to Dean that high-ranking angels such as himself have secretly been manipulating events to start the Apocalypse, believing that it will cleanse the earth and bring Paradise. Dean's task is not to prevent the Apocalypse from starting, but to end it once it has. Dean is furious at Castiel for deceiving him. Castiel rebels against Heaven and helps Dean escape and protect bella and his unborn daughter , banishing Zachariah with a bloodsigil. Dean arrives at Sam's location in time to see Sam overpowering Lilith. Goaded by both Lilith and Ruby, Sam kills Lilith with his powers, unwittingly breaking the final seal. Ruby reveals that she has been working for Lucifer all along, but Dean kills her with Sam's help. The brothers watch in terror as Lucifer emerges from his opened cage and at the end dean sam bobby and cas went to see bella her stomach is grown really quickly but not really fast it was almost time for her and cas daughter to come
ill add like 2 more