In Boogeyman 3, the college student named Sarah witnesses her roommate's alleged suicide after she complains about seeing the Boogeyman. Sarah becomes obsessed with proving the supernatural entity's existence and starts experiencing terrifying hallucinations.
Her friends and the rest of the dorm think she's losing her mind, but when they start disappearing one by one, they realize that something sinister is indeed after them. Sarah teams up with a skeptical campus security guard named Crispen to try and stop the Boogeyman before it's too late.
As they dig deeper into the mystery, they discover that Sarah's own traumatic past may have something to do with the Boogeyman's presence. They also learn about a paranormal expert studying the legend of the Boogeyman, who may have the key to stopping it.
The tension builds as the Boogeyman's attacks grow more violent and the surviving characters are forced to confront their deepest fears. In the climactic showdown, Sarah and Crispen must face off against the Boogeyman in a final battle for their lives.
Overall, Boogeyman 3 is a suspenseful and terrifying horror movie that explores the power of fear and the dangers of not believing in the supernatural.