A sleepover filled with board games, laughter, and harmless fun. In the fall of 2006, siblings Luan and Mike, along with their friends Jenna, Addy, and Jess, gather at their house while their parents are away. Searching for games in the attic, Luan stumbles upon a mysterious box labeled in bold, foreboding letters: DANGEROUS, DO NOT OPEN. Curiosity gets the better of her and she discovers an old, cryptic diary dated 1997, written by a woman named Elizabeth. Alongside the diary lies a black box, heavy and strange. Against their better judgment, Mike opens the box, finding it empty-or so they think. That night, the group huddles together in one room, unnerved by what they've found. But when Jenna wakes in the middle of the night and ventures into the kitchen, the nightmare begins. One by one, an ancient entity hunts them, mimicking its victims. Six years had passed since that horrific event. It's now 2011, and the cursed box resurfaces, finding its way into the hands of six unsuspecting girls who share the same eerie experience as Luan, Mike and their friends. Drawn together by a series of strange coincidences, these girls-Liv, Madison, Jennifer, Bella, Hayley, and Stacy-begin to uncover chilling connections between their encounters and the unsolved disappearance of Luan, Mike, and their friends. Each of them has their own haunting tale of how the box found them. But the pattern is always the same-the black box, the cryptic diary, and the creeping sense that something is watching, waiting to strike. The girls must delve into the origins of the curse, uncover the truth about Elizabeth's final days, and find a way to destroy the entity before it claims them all. but as the box's power twists reality, alliances are tested, and trust becomes a deadly gamble. With the entity able to mimic anyone, how do you fight a monster when it might be one of your own?