An amnesic blind man awakes alone in the back of an ambulance and unsuccessfully tries to contact anybody using the radio. Soon he finds zombies attacking him but he succeeds to flee to a farmhouse where he hides himself. Meanwhile the pregnant police officer Mara Madigan is lured by a sick woman and her police car is hijacked. She walks on the road and reaches the same farmhouse where the blind man is hidden. She decides to look for the ambulance to leave the place but it has run out of gas since the man, Ben Neilson, had started the car and left it working. Now Mara and Ben need to team up to escape from the zombies.