Vanessa begins to have strange nightmares in which ghosts guide her to the Hotel Abaddon—a cursed place known as the House of Ada. A journalist approaches the girl, who finds a connection between this hotel, the Carmichael estate, and a chain of mysterious deaths that have occurred for decades. Vanessa discovers that the tragedy that happened in the past awakened an ancient evil, and now the House of Ada demands new victims. She must figure out how to stop the demon before these nightmares become reality.