For 16 year old Kristen waking up in a strangers house is normal. Untill She sees her best friend munching on her boyfriend. After saving her 12 year old sister Josie and learning that shes one of the immune, Kristens super hot neighbor and his sister takes Kristen and Josie to a safe zone. Alls well till the spreaders break down the protective wall around the safe zone. The survivers hide out in the local supermarket. One by one they turn on each other, till spreaders arn't the only thing Kristens scared of.