In a maximum-security psychiatric hospital, a patient is released after undergoing an experimental treatment that has left her with a fragmented mind. However, what the doctors do not know is that her past is about to come to life in a terrifying way. Upon returning home, a series of macabre deaths begin to occur in the city, all linked to this woman, who is actually a survivor of a brutal killer that has returned to finish what he started.
The plot delves into chaos when a group of young people starts investigating these mysterious murders and stumbles upon a mystery that leads them into the depths of madness and despair. Meanwhile, the patient struggles to reconstruct her mind and remember the horrors she has experienced, trying to warn those around her of the imminent danger.
As the nights grow darker and the bodies begin to pile up, a palpable tension takes over the atmosphere, and the friends will have to confront their own demons if they want to survive. With unexpected twists and a chilling climax, the film blends slasher elements with a deep exploration of mental health, blurring the line between madness and sanity in a deadly game. Time is running out, but the true horror is just beginning.