Craig of The Creek: Lost Episode

Have you heard of Craig of the Creek? A show made by one of the writers of Steven Universe. Like Ian Jones Quartey, creator of OK K.O. Let's Be Heroes, Jeff Rosenstock works on the show.
However, before the show aired, he had someone who helped him work on the show. The guy told him to apply certain things onto the show. It was originally going to be about them conquering landmarks of the creek, like the final show.
Rosenstock gave me a DVD to play at my house.
When the episode started, it seemed like a normal episode of Craig of the Creek. Except for the quality of the episode, it looked similar to one of those test animations of Uncle Grandpa or Clarence.
The episode began with the main cast. Craig was colored caramel instead of his usual black, sorry for being racist. JP's name was PJ, and Kelsey's hair was more of a fawn color than her typical orange hair, oh yeah and before I forget, Mortimer wasn't a parakeet but a pet hamster.
When the episode began, it started with Craig stating this to PJ and Kelsey about this, "Alright then, we will go explore the Overpass." Instead of the murals, it was satanic imagery and a pentagram on the ceiling. Then Craig found uncovered land. Kelsey found a stump and placed a Confederate-like flag on the stump and turned it into their hide-out.
Then it skipped to a News report, Action 52. They were reporting that Beach City was nuked by a crazy sociopath. Not caring about Steven Universe, the city Miami was also nuked.
Then I felt that Craig began having flashbacks of Thanos deceased.