In a suburban neighborhood, a group of teenage girls plans a slumber party at the home of Linda, one of their friends. The night is intended to be filled with typical teenage pastimes like listening to music, doing makeovers, and sharing secrets. Meanwhile, unknown to them, a mental patient has escaped from the nearby hospital. This deranged individual has managed to acquire surgical scrubs, impersonating a doctor during his escape. Driven by a sinister urge, the escapee makes his way to the very neighborhood where the slumber party is taking place.

As night settles in, the girls enjoy their evening, oblivious to the looming danger approaching their doorstep. Linda’s father, a surgeon at the same hospital from which the mental patient escaped, has left for a late shift, leaving the house vulnerable. Unbeknownst to the girls, the mental patient has targeted their location. Strange noises and mysterious occurrences start to creep in, with stormy weather amplifying their fear. Tension rises as phones ring inexplicably and lights flicker ominously. Insidious elements begin unfolding gradually as what began as an innocent party turns into a night of terror. The unforeseen threat prowls silently around them, leaving them unaware of the desperate situation they find themselves in as the unexpected visitor closes in on their evening of fun.