With much of the future world's population rendered into an undead horde, R is a young, and oddly introspective, zombie. On a feeding encounter with a human gathering party, R meets Julie and feels an urge to protect her. What happens with that is the beginnings of a strangely warm relationship that causes R to start to regain his humanity. As this change spreads throughout the undead population, Julie and R eventually find they are facing a larger issue even as their friendship is challenged. Caught between the paranoid human forces and the ferocious Bonie zombies who are a mutual threat, R and Julie must find a way to bridge the sides for fight for a better world no one thought possible.
When Julie and R are running away from the Bonies, they run through the parking garage to use the red convertible to get away. As Julie is getting into the car, she grabs the windshield to sling herself in the driver's seat. Since the windshield is dusty, you can see where she grabbed the windshield from past takes of filming.
When the group of young people, consisting of Parry, Julie, and Nora, are watching the safety video before their medicine run, you can see Parry's dad in the video they are watching. However when R has a flashback to when Parry and Julie go visit Parry's dad in the construction zone and find out he's a zombie, neither of them were filming, so there is no way they could have the footage of Parry's dad for the safety video. Julie shot him so it's not as if they could have gone back and filmed the construction site zombies later. They clearly used the same shot from the scene for the video.
Nicholas Hoult - R
Teresa Palmer - Julie
Analeigh Tipton - Nora
Rob Corddry - M
Dave Franco - Perry
The story is based loosely on "Romeo and Juliet". "R" = "Romeo"; "Julie" = "Juliet; "Perry" = "Paris"; "M/Marcus" = "Mercutio"; "Nora" = Juliet's "Nurse" (the character of Nora is also a nurse).
The character Nora was originally described as having brown skin and being half Ethiopian, but they instead decided to go with a Caucasian actress (Analeigh Tipton).
When R is talking to Julie outside her house the scene is referencing to the balcony scene of "Romeo and Juliet". R (Romeo) is talking to Julie (Juliet) on the balcony.