In a polluted future Venice researchers work to improve the situation. One day, unknown forces start killing them. A team of soldiers and a couple of civilians is sent to investigate. Soon, they encounter strange murderous creatures.

Victor Raven, a famous rock star, returns to his childhood home to shoot a music video. Believing his presence is responsible for the return of a monstrous hound that killed folks when he was kid, the locals decide to do something violent about it.

When a terrorist's body, infected with a stolen chemical, is recovered by the US military, the corpse is cremated, unintentionally releasing a virus and bacteria into the atmosphere over a small island.

When young Joshua learns that he will be going on vacation with his family to a small town called Nilbog, he protests adamantly. He is warned by the spirit of his deceased grandfather that goblins populate the town. His parents, Michael and Diana, dismiss his apprehensions, but soon learn to appreciate their son's warnings. Guided by his grandfather's ghost, will Joshua and his family stand a chance in fighting off these evil beings?