To give you the basics, the zombie apocalypse has happened, they're everywhere, humans are almost extinct, yada yada yada. Some key differences are that eventually zombies turn into these walking skeleton things called "bonies" that are seen as a force even more evil than regular zombies. From the zombie's POV; to humans they are all pretty much the same thing. Another difference is that the humans built this huge wall to keep zombies out and it's actually working.
The main character we follow is a zombie called R. While on a regular hunt for human flesh with his zombie buddies, they come across some kids who are out looking for medical supplies. The zombies attack them and get to feasting. But during the chaos, R sees a young girl named Julie and his vacant expression becomes even more so for a few minutes as we realize he's fallen in love.
I won't give away any spoilers for those who haven't seen the movie or read the novel but I will say that I really enjoyed this new perspective on zombie flicks. It was funny and super sweet not to mention not too much of a gore fest for those who aren't looking for that in a romance movie. Check it out for some laughs and warm fuzzies.