The tale of satanic vampire sorceress Eva, whose sexually-charged midnight rituals are interrupted when God-fearing local villagers burst into her lair and murder her. A century later, motorcycle-riding writer Lisa moves into the same cabin where Eva was executed, with the intent to write a book about the supposedly haunted spot's history. Soon, Lisa is having vivid, perverse dreams and slowly, surely, Eva begins taking over the young woman, using her body as a vessel to commit even more atrocities in the name of resurrecting an ancient monster from the underworld.

After a young couple witnesses a gruesome highway accident, they soon realize they did not leave the crash scene alone, as a demonic presence called the Passenger that won't stop until it claims them both turns their van life adventure into a nightmare.