Trapped

A montage shows a young boy dying from exposure to toxic waste spilled by NTX. The sequence emphasizes the human cost of the corporation's negligence and hints at the danger surrounding the tower. It ends with the father's farewell to his wife's corpse as he heads toward the NTX building.

The father leaves home and makes his way to NTX's luxury tower, the Kupper-Dietz Building. The building is described as a place of offices and laboratories owned by NTX, setting the stage for the ensuing events. His destination signals the beginning of the nightmarish lockdown.

As the workday ends, Mary Ann Marshall and Renni are the last two daytime employees to leave. They discover that all exits are sealed and the telephones are dead, isolating them inside the tower. The eerie lockdown marks the onset of danger.

While seeking aid, they stumble upon the security room, abandoned with clear signs of a violent struggle. An intruder is present, and something dangerous is on the loose within the building. The discovery heightens the sense of vulnerability and pursuit.

The intruder attacks, fatally wounding Renni while Mary Ann escapes by falling into an elevator. The elevator carries her upward to an unfinished condominium overlooking the tower, providing a temporary refuge from the killer.

In the unfinished condominium, Mary Ann encounters John Doe, a corporate spy who has been secretly living in the building to steal NTX secrets. He becomes an uneasy ally as they navigate the danger together. The meeting shifts the dynamic from victim to partners in survival.

John agrees to look into Mary Ann's claims of a killer while she goes to seek help from NTX leadership. She discovers Harold Manley dead, with newspaper articles about NTX stabbed into his chest, signaling a high-stakes thriller within the corporate fortress.

Mary Ann and John reunite to search for the building's watchman. They find him just as he is fatally bludgeoned by the killer and barely evade being caught themselves. The chase intensifies as danger closes in.

After another confrontation, John's arm is broken and the two separate to survive. Mary Ann seeks safety in the parking garage, trying to stay ahead of the killer as the night wears on. The tension thickens as the pursuit continues.

The killer's car begins leaking fuel, triggering a dangerous chase through the garage. John reappears and sets the spilled gas on fire, causing the killer's vehicle to explode after a collision with Mary Ann. The explosion marks a devastating climactic moment.

As automatic lockdown lifts at 6:00 am, the immediate threat subsides and the tower returns to a fragile calm. John uses the moment to slip away from the scene, leaving Mary Ann to face the aftermath. The early morning silence hints that danger may be over, but the memory lingers.

Paramedics treat Mary Ann while police question her about the night's events. She returns to her home, where she is greeted by John, who has waited to ensure she is safe. The uneasy reunion closes the night, with the implication that their strange alliance has survived the ordeal.