After a zombie apocalypse, R, a zombie, spends his days wandering around an landing field which is now crammed with hordes of his fellow undead, as well as his ally M. R and M win rudimentary communication with grunts and moans and occasional near-words. As a zombie, R constantly craves human flesh, especially brains, as he's able to "feel alive" through the victims' reminiscences he experiences when he eats them. while R and a pack of zombies ar out looking for food, they encounter Julie Grigio and a gaggle of her friends, who were sent out by Julie's father from a heavily-fortified, walled-off human enclave during a nearby town to recover medical supplies from abandoned buildings. R sees Julie and is drawn to her. once being shot in the chest by Julie's boyfriend, Perry, R kills him while Julie is distracted, and eats his brain, giving R his thoughts and reminiscences, creating his attraction to Julie even stronger. He rescues Julie from the remainder of the pack and takes her back to an heavier-than-air craft he lives in at the landing field to keep her safe. the two bond, inflicting R to slowly begin to come back to life. once a number of days, Julie gets restless, and tries multiple times to come back home, yet attracts swarms of zombies on every occasion, requiring R to rescue her. once warding off a gaggle of zombies, as well as M, who is confused by R's actions, R decides it's time to come back her to the human enclave.
On the way, R reveals to Julie that he was the one that killed Perry, which prompts her to abandon him and come back alone to the human enclave. R begins to create his approach back to the landing field, sorrowful. He then sees that M and other zombies are getting down to show signs of life, creating all of them targets for the Boneys, skeletal zombies who having lost all traces of their humanity have shed their flesh, and prey on something with a heartbeat. R and M lead a gaggle to the human enclave, where R sneaks within the wall. There he finds Julie and meets her friend Nora, who is ab initio afraid. when R reveals that the opposite corpses have conjointly been returning to life, the 3 of them plan to tell commissioned military officer Grigio, Julie's father and leader of the survivors. commissioned military officer Grigio, however, refuses to believe corpses can amendment and threatens to kill R, stopping only if Nora pulls a gun on him. Julie and R escape to a baseball stadium where the remainder of R's cluster is waiting, but find themselves under attack by a horde of Boneys.
While M and his gang of zombies resolve against the Boneys, Julie and R run, but find themselves trapped. Taking the only escape route, R jumps with Julie into a pool far below, shielding her from the impact. once Julie pulls R from rock bottom of the pool, they kiss stormily - inflicting R to become totally revived. commissioned military officer Grigio finds them soon once, shooting R in the shoulder abruptly, and when R bleeds, is finally convinced that he has came back to life. The humans and zombies mix forces and kill most of the Boneys while the remainder die off, and therefore the zombies slowly assimilate into human society. The film ends with a now totally alive R and Julie looking at a wall close the city being dismantled, signifying the top of the apocalypse.