What starts as a poignant medical documentary about Deborah Logan's descent into Alzheimer's disease and her daughter's struggles as caregiver degenerates into a maddening portrayal of dementia at its most frightening, as hair-raising events begin to plague the family and crew and an unspeakable malevolence threatens to tear the very fabric of sanity from them all.

Three friends on spring break in a foreign country charter a boat to a remote island where it's rumored that you can freely hunt zombies. However, what starts out as a fun real-life video game, turns a little too real. The question then becomes "who's hunting who?"