You are part of the crew of the Pinafore, a proud member of the Space Pirates.  While you're stuck here on Earth, you've infiltrated the strange group known as the Followers of Set.  Extraordinarily evil bunch; the great G&S themselves couldn't write a better pack of villains.  They have this plan to take over the Earth, which you don't much care for -- if they're that powerful, they might be able to expand further, and they don't seem to be the most musical of people.  So you're keeping an eye on them...