A close-knit group of female friends finds their annual wild sleepover turning into a battle for survival when a supernatural force threatens global destruction—and, even more tragically, jeopardizes their one night of the year dedicated to a nude pillow fight. Ensnared by enchantments, besieged by malevolence, and scantily clad, can they make it through the night? Or will this sleepover transform into a massacre? “Slaughterhouse Slumber Party” is the unexpected fusion of “Hard to Die,” “Evil Dead II,” and “Parks & Rec” that audiences never realized they needed.