Don't Look Back
This is the real world. The ghosts are coming up through the cracks in the ground, dancing behind the windows at night, sitting in your attic and playing cards, weeping by their gravestones, following their murderers and planning bloody mayhem, dealing drugs in the back streets and forming cults to try to unearth what truly lies beyond them, just as they in turn lie beyond death.
And they are all around you.
This is the real world. You're an agent for a mysterious group that may have a shadowy history but who won't admit it. You and your team can cast off your physical bodies - or already have done so - and walk through walls, take over people, scream down houses. But if the body dies, so do you. You've been given missions, important, dangerous missions that have you working with (or against) the rich and famous, saving lives, banishing ghosts, expanding the frontiers of human knowledge by determining what really happens after death. Sounds good, doesn't it? Sounds like the sort of thing that ought to be front page news. It is.
This is the real world. Trust Orpheus, but trust nobody else. There are other organizations out there who aren't as ethical as you are, and who want to control the living by using the powers of the dead. There are ghosts being twisted into creatures of malice and pain. There are living people creating tormented ghosts through cruelty, or malice or simple ignorance. There are people who want to use you. There are people who want to kill you. For real.
The World of the Dead
In Orpheus, you are the heroes of your very own ghost yarn. This isn't one of those stories where there's another side, however, or where happy ghosts come back from Heaven to provide counseling or their ex-wives and depressed children. This is a tale where ghosts walk side by side with living human beings, unseen and unheard, possibly benign, often malignant. This is a story where human beings are tearing back the veils from death, uncovering the secrets of what comes next, and discovering strange new abilities in the process.
This is a story of pride, of ambition and of temptation. You have all nearly died more than once. How long can you continue avoiding it? You belong to an agency with private agendas and concerns, and you are constantly sent on dangerous missions. Legality is apparently a thing of the past to people with your abilities and connections. You're special agents, sent on some missions too important and too dangerous to tell the rest of the world about. You're able to separate spirit from body - indeed, some of you already have - and can affect people or things purely through willpower.
At the same time, there's a darker side to all this rampant heroism and power. Your new abilities came through venturing to the very edge of death - and who knows what else may come back with you? Look at the other ghosts haunting the world. How many of them are sane? How many of them are safe? And you are one of them. It's a pity, but there it is. It may take awhile for you all to realize it, but you're displaying the same powers as ghosts, you've gone through a kind of death to separate body and spirit, and you must now undergo the same dangers.
Yet, you're still human, and this is still a story about the living world. You can't escape into some sort of secret society or find another reality in which to hide. This world is your problem; you must deal with it or face the consequences. Ghosts are apparently a part of the real world, even if nobody realized it before. You just didn't know it - no one did. How many times have you walked past ghosts before without realizing it? Will you ever be able to visit an old building again or see a site where a murder took place without wondering if a ghost haunts the spot? This is the end of innocence, but also the beginning of conscious investigation. Knowledge once acquired cannot be unlearned; you can't stuff the genie back in the bottle, and ghosts won't simply go away. This is the point in the horror movie where the characters have their equipment, know how to use it and believe they can handle the situation.
Of course, since this is a horror story, it isn't that easy.
You And Orpheus
Each of you is a member of a private, well-funded organization known as Orpheus Group. The group's mission statement involves helping distraught citizens obtain closure in matters pertaining to departed friends and loves ones. Imagine what would happen if the boy from The Sixth Sense grew up to form his own "ghostbusting" organization and you're on the right track. Rather than destroying or capturing ghosts, however, Orpheus Group agents seek to understand and communicate with them... mostly. The exact nature of each mission varies with the client, of course (and on occasion, with company directives). The company charges a nominal fee for its services, of course, since without money, none of their efforts would be possible.
Also known to the general public, however, is the manner in which Orpheus Group accomplishes its task. It carefully selects each prospective agent, for only those with the right background can function in the capacity of agent. Only those who survived multiple near-death experiences make it past the initial screening phase, and even then, only a handful makes it through the advanced training. Agents of Orpheus Group can communicate with the dead because they don't do the bulk of their work among the living - they actually join the dead, by projecting their souls from their bodies.
Some agents accomplish this through meditation alone ("skimmers"), but others who haven't mastered this technique are placed in a deep, coma-like state using cryogenics and embalming cocktails to ensure their body stays "dead" without actually undergoing necrosis ("sleepers"). From there, the agent's soul is free to roam, and in this state, he can and will encounter other spooks (ghosts or "projectors", those who skim or sleep). Orpheus also "employs" ghosts, those people with the wherewithal to survive past death. Between Orpheus' so-called projectors and ghosts, the afterlife is mankind's newest frontier.
Whether Orpheus sought you out or you applied, you made it past its rigorous screening and training and are now one of its agents... this world is your world.