METAMORPHOSIS

The Talos Corporation, a scientific research facility located in New Jersey, is tasked with experimenting on mysterious alien tissue provided by the United States government. Dr. Michael Foster and his lover Dr. Nancy Kane splice DNA from the tissue into laboratory animals, resulting in them mutating and becoming violent. While working on culturing the alien genes in a creature he named "Spot," Foster is bitten and infected with the DNA. Spot escapes into the building, and Foster falls ill. Over the following weeks, Foster undergoes a horrific, agonizing transformation while Kane and Dr. Elliot Stein search for a cure. They eventually devise a way to use "Agnes," an experimental particle accelerator, to reverse the infection. However, before they can do so, Foster completes his metamorphosis and is reborn as a grotesque creature. He escapes and kills Elliot, then also kills security guard John Griffen before disappearing.

Talos executive Dr. Viallini summons security officials Jarrett and Mitchell for a briefing on the situation. Kane advocates for keeping Foster alive so he can be cured, but Viallini believes he should be put to death for the good of the company. Meanwhile, Griffen's daughters Sherry and Kim become worried when they cannot reach him. They visit Talos with Sherry's boyfriend Brian, but Viallini lies to them, claiming Griffen never came into work.

Suspicious, Sherry, Kim and Brian sneak back into Talos and discover proof of Viallini's deception. Mitchell and Jarrett catch Sherry and Brian, but Foster appears, kills Jarrett and injures Brian. Sherry and Kim are cornered by Foster in a laboratory and manage to briefly stun him by throwing a vial of acid at him. Viallini, Mitchell and Kane arrive and open fire on Foster, allowing Kim and Sherry to escape with Mitchell, but the two scientists are killed.

As the Talos building undergoes an automatic lockdown, Mitchell guides Kim and Sherry to Agnes's chamber, intending to carry out Kane's plan to cure Foster. Kim and Mitchell lure Foster beneath the accelerator's generator; he attacks them both, but Sherry fires the beam before he can kill them. The radiation painfully reverses Foster's mutation, transforming him back into his human self. Mitchell reloads his gun and prepares to execute Foster, but Foster begins laughing in an inhuman way as his face deforms, and his mutant form's head rips from his mouth. Reverting back into the monster, Foster violently attacks and kills Mitchell by swallowing him. He then attempts to destroy the accelerator, but Sherry lowers the generator to pin him against the floor before firing the beam again, annihilating Foster once and for all.

With the crisis seemingly over, Kim and Sherry discover Brian is still alive. However, before the three can leave the Talos building, they encounter Spot, who has significantly matured. Spot escapes through the ceiling and bursts from the roof of the building, having grown to a gigantic size, and roars in triumph at its freedom.

Foster's mutation is briefly reversed with the particle accelerator, but he transforms again, killing Mitchell. Sherry ultimately uses the accelerator to destroy Foster, but a giant mutated creature named Spot escapes the facility.

The ending underscores the uncontrollable nature of tampering with alien biology: even after defeating Foster, the consequences of the experiments literally burst through the roof as Spot emerges, now a gigantic monster. The film closes on the idea that scientific hubris and secrecy can unleash threats too big to contain, leaving the fate of the outside world ominously open.