It's strange that a shrine to a vanished god should still be taking sacrifices. Not everyone forgets a forgotten god. The party explores an old shrine to a demon lord, kept up by a superstitious local.
People from all over the world travel to the oracle of the dead, the Necromanteion, to commune with the spirits of the dead. Following a ritualistic preparaton of the body and the mind, a "Seeker", as they are called, enters the Adyton, and with the help of the Prophet comes in contact with spirits. Who would your characters talk to if they found themselves in the Necromanteion? Before you can answer that, you must first save it from a demonic invasion! With the temple in chaos, and foul fiends everywhere, will our adventurers be able to save the Necromanteion?