Los Angeles, California. Angel, Gunn, Illyria, and Spike are left to face a hoard of demons. The possibilities of their survival reached an all-time low. If it hadn't been for the watchers council's resources, notifying Buffy Summers of a future apocalyptic battle, they may have not made it. After collecting her army of slayers, Buffy made it to Los Angeles to wage war side by side with Angel and his team. It hard, long, and rough. They lost a few allies(including Gunn and Kennedy) on both parts, but they won in the end. What they hadn't known was the entire battle was a diversion of sorts. The First has opened up the Hellmouth in Cleveland, unleashing it's army onto Earth. Millions have died and things aren't looking good for the gang.
Most cities have been conquered by Turok-Hans. Humanity is forced to reside underground in order to survive. The Initiative have taken action, setting up underground facilities, ensuring highly secured shelters for those need. The facilities are operated by Riley and Sam Finn. Food and water provided by the facilities are rationed. Initiative soldiers are consistently sent on missions to retrieve food, water, and clothing when the sun rises.
The Powers That Be acknowledged the catastrophe that was becoming of the world, and agreed to restore a particular seer. Cordelia Chase. Except she wouldn't have any of her memories, but she'd be proven to be a liable asset for the gang.
Six months of this routine, and the gang is losing all hope. They have taken shelter in Las Vegas, which has demolished into ruins and covered in sand. While Turok-Hans are roaming there, the count of them is less then any other city, and there is a better chance of survival there.
The gang is dealing with their own dismays. Willow has lost Kennedy, and that is bringing back a darkness in her she was hoping had fully disappeared. Cordelia has no recollection of her memories, and is left with nothing but ultimate insanity. Buffy is forced to make more diffcult decisions that could tear the gang apart.
Could this be the end for our friends? Will The First win the battle, or will the gang fight back and conquer once again? That's for you to decide.