Present day. Arizona. Megan and Abby Graves are inseparable sisters that couldn't be less alike. Megan just graduated ASU with a marketing degree. She's a self-assured, naturally attractive rock chick with a black belt that she likes to use. Abby just barely graduated high school. She's a cute, Hot Topic Goth who's caustic and afraid of her own shadow. They share one thing: a life-long obsession with comics and pop culture. Simply put, they are beautiful geeks.
In a few days, Megan will start a new job at in New York. To send her off in style, the sisters go on a wild, pop culture bender that includes a trip to uncharted Arizona in search of a kitchy roadside attraction. Instead, Megan and Abby happen on Skull City Mine, a weather-beaten, abandoned mine town converted into a self-guided tour. But Skull City harbors terrible, vexing secrets. It appears to be haunted. Its caretakers are murderous. Victims' souls are ripped from their bodies right before their eyes, and that's only the beginning. When Megan suffers a near mortal wound, Abby must save her sister, but to do so, she must unlock the mystery of Skull City alone. Can Abby defeat the threats of Skull City and rescue Megan or are they doomed like all the other tourists before them?