In the gripping opening scene, a mysterious blond woman clad in a lavender dress shares an intimate moment with a man in a cemetery, an encounter that takes a terrifying turn as she brutally stabs him to death with a dagger. Simultaneously, Jody Pearson, a 24-year-old musician, is struggling to raise his teenage brother Mike, just 13 years old, in a quaint town in southern California that has been shaken by a series of unsettling deaths. Together with Reggie, a family-oriented ice cream vendor, the brothers begin to unravel the chilling truth behind the unsettling happenings, particularly focusing on a peculiar local mortician known as "The Tall Man."
Mike's fears about being abandoned by Jody surface when he confides in a fortuneteller and her granddaughter, sharing his uneasy suspicions about the Tall Man. During this interaction, he encounters a peculiar black box that grips his hand, leading to an exploration of the notion that fear itself could be the ultimate killer. This realization propels Mike towards a climactic showdown with the Tall Man.
As suspicion deepens, Mike trails Jody to a local bar where he witnesses Jody with the enigmatic woman in lavender. Following them to Morningside Cemetery, Mike's attempt to spy leads to a spine-chilling encounter with a small, brown-robed figure that frightens him. Jody, alerted by Mike's scream, rushes to find him, but upon returning, discovers that the woman has vanished.
Haunted by nightmares of the Tall Man and his dwarf-like servants, Mike becomes determined to uncover the truth behind Morningside Mortuary. After an intense encounter involving one of the dwarfs, Mike embarks on a mission armed with a knife to face what lurks within the mortuary's depths. When he breaks in, he stumbles upon the Tall Man and a flying silver sphere that ominously targets him, creating a series of horrifying revelations about the mortuary’s gruesome secrets. In a heart-pounding chase, Mike manages to sever part of the Tall Man's hand, showcasing his courage but raising the stakes considerably.
The next day, Mike reveals the chilling evidence—a twitching severed finger—to Jody and Reggie, triggering chaos when it morphs into an aggressive insect. As the brothers bring their findings to light, their investigation leads them deeper into danger, resulting in shocking discoveries about what has happened to their friends, including the revelation of one of their former companions transformed into a dwarf.
As danger escalates, Jody is propelled into confronting the mortuary's terrifying realities, discovering the body of Reggie and uncovering the dark truth behind the Tall Man's sinister motives. A heartbreaking race against time transpires, driven by the brothers' determination to rescue Reggie and survive the terrifying grips of the Tall Man’s minions.
The film contains extraordinary moments of tension as Mike and Jody venture into the alien realms of the mortuary, learning the horrifying truth that the Tall Man is indeed using the dead to harvest for his nefarious purposes. As they fight for survival in an increasingly perilous situation, the duo's courage is tested when they attempt to trap the Tall Man in a mine shaft, leading to a harrowing conclusion that teeters on the edges of reality and nightmare.
Ultimately, just when it seems they might have overcome the Tall Man, a shocking twist ensues as Mike awakens from what appears to be a nightmare. With the memory of his brother Jody and their parents lost in a fatal car crash, the horrifying realization sets in that the battles fought against the Tall Man may not be over, as sinister shadows loom once more…
> "You know what they say, 'Thai foo...'"
With chilling suspense, Jody and Mike grapple with the realization of their haunting memories and the lingering threat that the Tall Man presents, leading to an unforgettable climax filled with dread and uncertainty.
