During a reckless night at a ski lodge, three college girls—Chase, Lauren, and Tori—accidentally cause the death of a teenage employee on a ski lift. Panicked, they hide the body and agree to keep the truth buried, even as Chase hesitates to call for help. The next morning, they leave without telling anyone, sealing a secret that will follow them for the rest of their lives.

One year later, the group returns to the same lodge for a Halloween weekend party, attempting to move on as if nothing happened. But a violent blizzard traps them inside, and tensions between the friends quickly resurface. When the power fails and a masked figure begins stalking the lodge, the night descends into chaos. One by one, their friends are brutally murdered, including Lauren and Tori, forcing Chase to confront the consequences of what they did.

As Chase searches for help, she uncovers evidence that someone has been watching them—documenting their past and piecing together the truth. The killer is revealed to be Ryan, Tori’s boyfriend and the victim’s brother, who learned of their involvement through a recorded confession. Driven by grief and rage, Ryan orchestrates the night as an act of revenge, forcing Chase to face her guilt and confess.

In a final confrontation, Chase fights back and survives, killing Ryan. As the storm clears and authorities approach, she is left with the weight of the truth—what happened that night, what she chose not to do, and the lives lost because of it.