Warm Bodies is a cute love story set in a post-apocalyptic, zombified world. Think "Walking Dead" meets "Romeo and Juliet."
R (Nicholas Hoult of X-Men: First Class fame) is a corpse caught in the middle: he walks and eats like a zombie, but deep inside him, he still has thoughts. When he encounters Julie (Teresa Palmer, who looks like a blonde Kristen Stewart in the film), R develops feelings. This development eventually sparks a transformation into becoming a human again. The only catch is that Julie's father (John Malkovich) is more interested in shooting R's head off than having him over for dinner.
As I've mentioned, there's a lot of Romeo and Juliet (aka "Star-Crossed Lovers") elements in place and the movie is quite predictable. But director Jonathan Levine (50/50) makes the movie watchable and likable, especially the "Twi-hard" crowd.
Warm Bodies is a nice little twist in the rom-com/zombie genre that for the most part is much better than any of the Twilight films.