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.

When everyone else mysteriously vanishes from their wealthy town, the teen residents of West Ham must forge their own society to survive.

A group of teen girls from different backgrounds must fight for survival after a plane crash strands them on a deserted island. The castaways both clash and bond as they learn more about each other, the secrets they keep, and the traumas they've all endured. But there’s just one twist… these girls did not end up on this island by accident.