In the first segment a news crew goes to a farmhouse in a small town, but no one is around. They discover London has been quarantined. As there are no pubs in the town and their car has broken down, they head back to the farm house hoping they can spend the night. Of course there is zombie action, some of which involves the group running around at night while the footage bounces up and down, and is lit by a flashlight. In other words, you can't see what is going on.
A month later, the second diary entry picks up with a different group of three young people who head into a deserted town in order to get groceries and parts for their malfunctioning radio. Zombies show up and the group must try to escape.
Lastly we check in on a farm in the middle of the country. It is night and we can't see what is going on due to the scene being lit with a flashlight. These survivors are the biggest and best organized group. They have guns and systematically kill any zombies in the area. They even do sweeps to see if there are zombies around, instead of waiting for them to show up. Then they dispose of the bodies they kill
One lady is obsessed with no one tracking any zombie blood into the house, and a recent addition to the group proves to be a troublemaker. He later turns out to be a total sicko, but those who discover this keep it under wraps until they can figure out how to deal with him. Seriously, there are some people that will need to be eliminated when you're trying to survive after the zombie apocaplyse, and those are people who are a danger to living.
The three kids from the previous segment show up again and get careless. Seriously? They've survived this long and then they do something so stupid? Doesn't make any sense.