About the title
Mackenzie Cody heads to Cinder National Park with friends to search for her missing sister, Marilyn. Not wanting to enter the forest alone, where people often go missing, the friends accept help from a local resident named Leon. Venturing deeper into the park with their guide, Mackenzie and her friends begin experiencing hallucinations and hearing "voices." Before long, the situation spirals out of control when they discover an invisible portal that transports them to a parallel dimension inhabited by mysterious monsters...