You know how some novels, movies, and TV shows really don't have a plot, but are just a lot of genre shit that gets triggered when the dialog runs out of steam? Like in a bad sci-fi film, you might start with a space battle with explosions that turns into an escape scene. Then you bring in a crash landing. Since there's nowhere to go plot-wise, the survivors have to deal with a monster, and so on.

In this case, you just grab something out of the conspiracy bucket and stitch it to what came before. It doesn't matter if you go from the Grim Reaper to Nazis to Obama as Antichrist so long as it's something from the bag.

As for the bucket, it's like how the theater you're seeing the shitty movie in has no trouble telling you where to get Coke and popcorn.