The story doesn't seem to be the Bidens. The story seems to be Giuliani and the repair-shop owner and the other weird stuff.
I do wish it were easier to find good media reporting on all of that. It's hard to find an explanation of (a) what facts are being alleged against the Bidens, (b) what the evidence supporting those allegations are, (c) the reasons for skepticism about that evidence, and (d) Rudy LOL.
There isn't a page on Wikipedia about this stuff, at least as far as I can find.
This summary by the AP is the closest thing I can find to a general overview, but I can't help thinking that there must be more juicy details regarding this saga. I hope they are discovered and reported because I think it will be good entertainment. Most things involving Giuliani these days are.