Pregnant college student Lenore Harker leaves college before the end of the semester to move to an isolated house with her boyfriend Frank. When Lenore is ready to deliver the baby, they drive to the hospital. In the surgery room, the two doctors and the two nurses are found slaughtered and Lenore and the baby are found covered of blood. When Lenore is released, the family returns to Frank's house.

After moving to a new home with his parents, Michael discovers a stranger living in the shed at the bottom of the garden. Michael learns more about the stranger as he tries to nurse him back to health, but at the same time tragedy threatens to strike his family as Michael's baby sister is diagnosed with a serious heart condition.

A young man is released from prison after many years and given a new identity in a new town. Aided by a supervisor who becomes like a father to him he finds a job and friends and hesitantly starts a relationship with a compassionate girl. But the secret of the heinous crime he committed as a boy weighs down on him, and he learns that it is not so easy to escape your past.

An intelligence operative discovers that no one is what they seem in the shadowy world of espionage.

When most of the population of Earth is infected with a virus and transformed into flesh eaters and blood drinking creatures, a group of hunters led by Tao chases the vampire zombies to eliminate them. Six non-infected survivors try to find the exit of an abandoned hospital crowded with the infected creatures, and Tao and his group help them. Meanwhile, the military command is ready to bomb the area and wipe it from the map.

While in the hospital for a tomography of the brain of his autistic daughter Sarah, Ben becomes upset when there is a power failure. He decides to leave the hospital with Sarah, while the nurse Emily tries to convince him to leave Sarah for further treatment. They get the elevator with three other passengers, and suddenly the elevator stops; when the door opens, people has vanished from the hospital, the environment is creepy and they are chased by devilish monsters. They find that they are trapped in the hospital, and the creatures seem to be hunting Sarah.