A hospital reports missing blood bottles. A tourist witnesses three bloodied women who dispatch of a dead body which then disappears. The trail leads to a bar. At the "Shocking Palace" John Sinclair meets a new generation of vampires.
A Secret Service agent sends a distress call before disappearing on a mysterious island. John is asked for help. The demon hunter learns that on "Proctor Island" an eccentric millionaire tries to fulfill his pact with the powers of evil.
When a gravedigger's warnings regarding a graveyard are being ignored by a construction company, the disaster takes its course. With the help of his friend Suko John intervenes. But can he prevent a prophecy Hell prepares for centuries?