See No Evil 3 continues the chilling story of Jacob Goodnight, the seemingly unstoppable killer whose past refuses to stay buried. The film begins in the aftermath of the second installment, where investigators believe Jacob has finally been neutralized. His body is transported to a secluded medical research facility for examination, and the staff prepares to conduct routine procedures. However, the atmosphere quickly shifts when strange power failures, unexplained noises, and missing equipment begin to unsettle the team. Although they assume it’s just the storm outside disrupting the building, viewers understand that something far more sinister is awakening inside.

As night falls, a small group of interns, eager to prove themselves, begins working late in the autopsy wing. They joke about the legends of Jacob Goodnight, unaware that the killer is regaining signs of life. When one of the interns notices movement under the sheet covering Jacob’s body, fear slowly takes hold. Their skepticism fades as the power cuts out completely, plunging the facility into darkness. The interns are left scrambling for safety as they realize Jacob is no longer on the table—and he is hunting them one by one.

The facility’s layout becomes a terrifying maze of hallways, locked security doors, and malfunctioning lights. Each character attempts to escape, but Jacob moves through the darkness with an almost supernatural sense of purpose. The survivors desperately try to warn the rest of the staff, only to discover the communication systems have been destroyed. Their only choice is to rely on their wits, using medical tools, emergency tunnels, and their knowledge of the building’s structure to outmaneuver the killer.

Meanwhile, Jacob’s motives grow clearer through brief flashbacks showing his childhood trauma and the twisted conditioning that shaped him. These moments add depth to his character, revealing a tormented figure driven by a distorted sense of judgment. Yet understanding his past does not make him any less deadly, and the interns must confront not only his physical strength but the psychological terror he embodies.

As the group grows smaller, the remaining survivors formulate a risky plan to trap Jacob inside the facility’s high-pressure containment chamber. The plan nearly fails when Jacob proves stronger than expected, forcing them into a brutal confrontation. The final moments test their determination, pushing them to embrace courage they never knew they had.

In the film’s conclusion, Jacob is once again subdued, but the ending leaves a haunting hint that his reign of terror may not be over. See No Evil 3 delivers a relentless atmosphere of dread, blending claustrophobic tension with the unstoppable force of a killer who refuses to stay dead.