I love Orpheus. Always have. It was the first White Wolf game I played, and it's never left me.
You're playing the good guys in a realm of intrigue and mayhem where ghosts have started appearing en masse and no one has any idea why. You might be dead already, or you're projecting from your body into a ghost-like state, but either way, you're going into the grey to sort out hauntings and all sorts of other problems.
Not that you're alone. There are spectres and other groups working to do the same thing, but they're not as nice as you.
The plot is gripping and I love that everything you'll ever need can be found in just these six books. There's no extras, no clanbooks - just six books with a complete game. All throughout the plot books, you'll find suggestions for how you can do things differently if you don't like the story or you want to do something different. This is a game that wants you to be creative and make into your own.
I hope you get as much out of it as I have.