A bull shark gets stuck in a reservoir. Angry and hungry, it torments 8 teens stuck on a flimsy swim platform who have no chance of surviving the day...

Stranded in a rural area, 2 teens make friends with locals on Halloween but soon run into a cult called C.O.R.N. (Collective Order of Recreational Necrophilanthropists) that have chosen this area to perform human taxidermy.