Can anyone summarize the 2 different sub-plots in Season 4 missions?

I know that they are the Orc Underground and Rise of the Artifacts, but can anyone give me a better brief overview?

The Orc Underground subplot covers the political machinations surrounding Proposition 23, which would make the Orc Underground into a district of Seattle. The Artifact Rush concerns a bunch of people with a lot of money trying to acquire stuff that's might or might not be magical that might or might not be left over from before the 5th World.

First off, a big THANK YOU!

Now, is either subplot better than the other?

I'm running Missions as a home game, and I'm going to try and work other stuff in (like maybe the Horizon trilogy and the Boardroom Backstabs stuff).

The Artifacts modules settle into a fairly predictable pattern, and the Orc Underground stuff is cartoonishly partisan in what should be a moral grey area. Both have their perks and drawbacks. I personally have enjoyed the Artifacts modules a lot more, but then again, I was also playing someone who likes (metaphorical) horse trading and (actual) damsels in distress and (despite spending 12 years as an instrument of The Manor House's foreign policy) dispises politics.