DEMONS 2

Years after the sudden outbreak of Demons, normal life has returned to the inhabitants of the big cities. Various residents of a high-rise apartment building are watching a horror film being broadcast on television; the film's story follows several teens who trespass into a city that was deserted and walled-off to contain the past Demon infestation. Finding a demon's corpse, one of the teens revives it accidentally when blood drips from a scratch into the demon's mouth.

Meanwhile in reality, a young woman named Sally celebrates her birthday at a party with her friends in the high-rise apartment. When one of her friends receives a call from a boy named Jacob and invites him to the party, she flies into a rage, screaming she does not want to see Jacob and demanding everyone leave. As she sequesters herself in her room, Sally watches part of the film on television. Suddenly, the demon on the television movie looks at her directly, then pushes through the television and attacks her, entering her body. She is unable to escape, as her friends have locked the door, so they can prepare her birthday cake in secret.

When her friends open the door and present the seemingly normal Sally with her cake, she suddenly transforms into a demon and attacks them, turning all but two of them into bloodthirsty monsters. The creature's bile seeps through the building, burning through the ceiling and into other apartments, and shorting out the electrical system. In one apartment, a dog licks up the bile and transforms into a vicious beast that attacks and kills its owner. In another apartment, a young boy left alone by his parents avoids Sally and her rampaging demon friends, but is poisoned by the bile and also becomes a monster.

The demon boy attacks Hannah, a pregnant woman waiting for her husband to come home. She kills the demon boy, but a smaller, flying demon bursts out of his body to further terrorize her. At the same time her husband, George, has been trapped in the elevator with another woman. As they escape through a service hatch, a security guard who turned into a demon after being scratched in the face by Sally bursts through the elevator door and infects the woman. She pursues George through the ceiling of the elevator cab. As he climbs the suspension cables above the cab, he kicks the demon away before entering his and Hannah's apartment just in time to kill the flying demon with an umbrella.

Meanwhile, a group of bodybuilders led by a gym instructor named Hank have barricaded themselves in the building's underground car park, along with a group of tenants. Unable to break down the garage doors, they defend themselves against the demons with shotguns and makeshift weapons, such as Molotov cocktails. The demons eventually force their way in. Although they outnumber the demons, the uninfected are either turned into demons themselves or killed, with the exception of a young girl named Ingrid, who becomes trapped in a car.

The infected start making their way back up the building. George causes a leak in the gas pipes that kills all the infected except Sally in an explosion. Hannah and George enter Sally's apartment, finding the two hidden partygoers. The four make their way to the roof but are stopped by Sally. She infects the two partygoers, but George dispatches them. George and Hannah lower themselves to the roof of an adjacent building, fighting and wounding Sally as they go. Inside the neighboring building, which is a television studio, Hannah gives birth to the couple's child. A blinded Sally appears and collapses, apparently dead. However, an image of Sally appears on several television monitors, running towards the viewer and presumably trying to attack them through the television as Sally herself was originally attacked. George smashes the monitors and he and Hannah exit with their newborn child.

The surviving humans fight their way through the demon-infested building, using makeshift weapons and clever tactics, as the demonic infection continues to spread.

Demons 2 concludes with the high-rise engulfed in chaos, suggesting that the demonic plague is relentless and may be unstoppable. The film’s climax underscores the futility of conventional defenses against a contagion that leaps from screen to reality, leaving the fate of any survivors—and potentially the world—ominously unresolved.