>>13655695
>Will post a summary
Vexille, 2007 film (Spoilers):
In the future, after Japan goes into complete lockdown and restricts all movement and communication, a mysterious pandemic suddenly hits the entire country. Everyone is forced to receive a vaccine to prevent the collapse of society.
The secret truth is that the illness was designed to allow the big tech mega-corp (which actually runs every aspect of the country including government) to use engineered vaccines to mass test their experimental nanotech, which 'evolves' human biology by merging it with technology. (The company was previously working to build human-like androids from the ground up, but realized it was more effective to modify existing people into android-like humans.)
The vaccinated citizens slowly lose their free will and humanity, becoming biometal androids, as every cell in the body is taken over by the nanotech. Each person, by receiving the vaccine, is slowly converted into a form of synthetic life.
The random people who are less affected by the vaccine are herded into one city that quickly becomes a shanty town where everyone lives in poverty. Outside that containment zone, the entire countryside becomes a wasteland dominated by machine monsters that are an unplanned side effect of the technology. The big tech execs live and work in the only remaining small oasis of thriving land. So the next step in their plan is to conquer the U.S. with an improved version of the technology.
A small group of the vaccinated, who currently still have some of their humanity remaining for a limited time, smuggle out one of the human-turned-androids in a shipment of robotics sold to the U.S. He manages to get word to an elite U.S. military team that all the top global leaders will be killed when they meet in person with the big tech firm that now controls Japan and the future of human evolution. Vexille and her lover are soldiers on that team, and they prove to be the last hope for exposing the horrors and ending this threat to humanity.