I think the best way to sum it is a collection of stories from the past to the present that are somehow related in the grand scheme of things, Absolute Tartarus being the core of it all. So the first chapter is probably some time post-Ultraman Saga considering 80 mentions that he heard about Cosmos from Zero.
The next chapter will be two points in history; the first will be way back in time when Father and Mother were respectively still called Ken and Marie and Belial was still around, the second will be when Taro was still young and Tregear was a mild-mannered scientist. Regarding Tregear's story I assume based on the synopsis on the official site that maybe it could be around the time Hikari was at Arb or maybe during Ultraman Mebius since they mention him one day vanishing.
The final chapter from the look of it seems to be post-Ultraman Z. At the least definitely post-New Generation Climax.

Yeah, like... the very first scene just looked straight into the camera and said "this is Ribut's backstory".

I wasn't aware the story of Absolute Conspiracy was going to be split up into hard chapters this way, but I kind of dig it? Seems like a natural way to shift the focus to different groups of characters without the story feeling bloated, which is probably an important consideration to make when this thing has ALL the characters.

Also, even not having properly seen Max, I realized what they were doing when the Max Galaxy showed up and got real excited. I guess any time a theme song plays, that scene is just guaranteed to be awesome.

Thanks guys. I had forgotten that they said it was Ribut's backstory. :lol A collection of stories throughout time is an interesting path to take.

What I really like about this web series is that they are filling in the canonical gaps within the lore while adding new things. Considering how the previous Ultra Galaxy fight was pretty much the introduction to Tregear perhaps this can be considered an intro to Absolute Tartarus prior to the 55th anniversary show.

Apparently, Image/Skybound want to do their take on Kaiju Battles with...UltraMega!? It's NOT Ultraman... technically, but...

https://bleedingcool.com/comics/its-...-dave-stewart/

Either Tsuburaya lawsuits this or they like it enough that they collaborate with image to make a toku version ala Toei Spidey.

Woo boy. Looks pretty edgy, all interest just completely sapped from those preview pages and description. Pass.

The designs feel like major Ultra ripoffs. I get that that's the point, but it feels a little too blatant IMO. Look at Radiant Black, which is homaging toku without being a carbon copy of Kamen Rider.

Now watching Ultra Q.