The Stranger, a Spookhouse agent, is assigned four missions alongside the dhampir Svetlana: infiltrating a German village to recover a relic that grants vampires immunity to their weaknesses; investigating a zombie outbreak in a small town traced to an insectoid infestation beneath an abandoned mine; dismantling Al Capone's factory producing undead gangsters, with the relentless enforcer Smiley blocking every exit; and confronting the retired Spookhouse operative Killian Hammond, who has been summoning the undead as revenge for a vampire killing his wife. In the epilogue, The Stranger returns to Spookhouse headquarters to find the entire staff gruesomely murdered and a message written in blood on the wall: "I finally found you, Stranger!"