Dean, Sam and Castiel

[The action takes place based on the 9th season of Supernatural, when the angels fell from Heaven]

All the angels are revealed to have fallen due to the angelic tablet. Metatron, using Castiel, takes his grace and closes the gates to Heaven, stranding all the angels on Earth. Upon learning that Castiel is to blame for their fall, the angel is hunted, while Sam falls into a coma due to the trial to close the gates of Hell. Dean takes his brother to the hospital. After learning from the doctors that his brother is unlikely to wake up, he seeks help from the angels. Ezekiel comes to his aid, tricking Dean into agreeing to let Sam temporarily serve as his vessel for healing after the trial.