You want a visceral, hand-built sci-fi film that looks like nothing else on screen, where every frame is painstaking stop-motion craftsmanship in service of a world so fully realized it feels documentary. The underground clone society isn't explained to you in exposition, it's discovered through movement and texture and the specific geometry of how bodies inhabit this space. This is what happens when a director spends years animating by hand to create something that CGI would only cheapen.
In the distant future, humanity turns to clones living underground as it searches for genetic information that has been lost. JUNK HEAD 1 is a science fiction short film with action and thriller elements. It was later folded into the 2017 feature JUNK HEAD as that film's opening part.