Friends. Family. Monsters. Urban legends of a murderous figure called Springheel Jack date back to the 19th century. What 16-year-old Baylee is about to learn is that "he" is most certainly for real...and not alone. Baylee and her older brother Elijah are orphans, their parents brutally murdered in what appears to be a random act of violence along an empty Nevada highway. Living now in another state with friends of the family they hardly know, the two teens do their best to build new friendships: shy Elijah with a small and loyal group of gamers, and quiet Baylee with exactly one tomboy skater friend, Krista...plus a strikingly beautiful and kind boyfriend Baylee won't tell anyone about. When Elijah suddenly gets his first girlfriend and Krista is picked up by a new boyfriend, both of them cease talking to Baylee. Determined to prove the two new kids are bad somehow, maybe even criminal, Baylee follows them out to the desert one night, and finds her worst fears are nothing compared to the bloody, gruesome truth. And her secret beau is right at the center of it... As Elijah slowly turns into something dangerous and otherworldly and Baylee's adoptive family moves to put her into a psychiatric health facility after she tells the truth about what she knows, Baylee turns to the only people who might be able to Elijah human again: her brother's nerdy RPG gamer friends.