In the aftermath of the devastating Mermaid Wars, the fractured, yet once great city of Iliad is under siege by dark forces. The infamous Goblin Hunter and the elite assassin, Atticus, must fight enemies both living and dead, in a desperate final bid to restore peace.

Forced to travel with her boyfriend to a horror festival, Laine begins to experience disturbing visions associated with the urban legend of The Creeper. As the festival arrives and the blood-soaked entertainment builds to a frenzy, she becomes the center of it while something unearthly has been summoned.