I just watched this short animated film online and I just know it's right up Jack and Davey's alley. It really defies description, but the in a general sense it's kind of a fantasy spin on a post-apocalyptic premise. Lots of imagination. Apparently, there is a push to develop it into a feature length film.
http://screenrant.com/shane-acker-9-animated-short-film-inspired-movie-kofi-6879/