Season 7-Season 8

Season 7

Castiel was able to open the door to purgatory in order to absorb all the souls it contains to defeat Raphael. Although Castiel defeated Raphael the souls corrupted his mind and started to claim that he was the new God, cleaning up humanity's corruption. The brothers didn't know what to do, Dean tried to come up with a way to fix everything up, while Sam was keeping quiet about the hallucinations he was having when Castiel broke the wall in Sam's head. In the end what Dean was planning to do was to summon the Angel of Death and control him to stop Castiel. Castiel was able to find out what they were up to and he freed the Angel of Death from the brothers. Death wasn't happy with what the brothers did, but he decided to help the brothers, because he didn't like the way Castiel was acting. The boys were able to open the door to purgatory and convinced Castiel to release the souls that he absorbed. He released the souls, but he wasn't able to get rid of the leviathans, beasts that God created and trapped in purgatory, because they couldn't be killed. They were able to escape from Castiel's body to seek life in the human world to take over in the future. In there adventures they were able to learn that a certain chemical burns the leviathans' skin and even though they can't be killed chopping off their heads then throw the bodies and heads away would work just fine. They faced many problems, because of the leviathans: changing their identities, laying low, and most importantly losing Bobby. On their hunt to stop the leviathans they were able to come across an important tablet, the tablet is a Word of God, called leviathan. This tablet told them how to stop the leviathans, but the catch is the boys can't read it. The only person that can read the Word of God is a prophet of the lord. the boys goes out to find the prophet finding him wasn't hard, but convincing him to help them was the problem. In the end the prophet decided to help them, the tablet told of a weapon the was able to trap the leviathans back to purgatory, but they need special items. The boys struggle to find the items, but was able to get their hands on them. They constructed the weapon and sent the leviathans back to purgatory, but at a cost it also sent Dean, who delivered the final blow, and Castiel, who was close to the blast , to purgatory as well, leaving Sam alone. After about a year or so, Dean as able to escape purgatory only to find Crowley stole the prophet and Sam stopped hunting for awhile. The prophet was able to escape from Crowley's hand only to be founded by the boys, with surprising information. The prophet tells the boys that Crowley had another tablet called Demon, this tablets gives instructions on how to close the doors of Hell. In order to close the doors of Hell a person has to complete three trials and Sam has decided to complete the trials to close the doors.

http://www.youtube.com/watch?v=l99SmsJo454     (Season 7)
http://www.youtube.com/watch?v=0jPu-XwjAH0   (Season 8)

season 8