Keller Dover is facing every parent’s worst nightmare. His six-year-old daughter, Anna, is missing, together with her young friend, Joy, and as minutes turn to hours, panic sets in. The only lead is a dilapidated RV that had earlier been parked on their street.
Milo Boyd, a down-on-his-luck bounty hunter, thinks he's seeing an upswing in fortune when he gets a call to bring in his bail-jumping ex-wife, a reporter named Nicole. Milo considers the job an easy payday, but Nicole quickly escapes to chase a lead on a murder case. The former spouses play an escalating game of one-upmanship, until they suddenly find themselves on the run for their lives.
In a small town in Massachusetts, four high school girls perform a ritual in an attempt to debunk the lore of Slender Man. When one of the girls goes mysteriously missing, they begin to suspect that she is, in fact, his latest victim.
