This is in Spanish, with English subtitles.
The film is narrated by a zombie named Mateo, so we hear what he's thinking, even though he can no longer speak. It's philosophical in nature, and I get the impression that everyone in the world has turned into zombies, as retribution by the Earth for all the harm we've done. I really like the concept, but I couldn't manage to enjoy it quite as much as I would like to. I thought it was at least worth mentioning, though.