The story is about the discovery of a kind of vaccine that permits the people to live longer. But some people react against the vaccine and become very strong and hostile (like hulk). The people that do not react to the vaccine live in a emerald or crystal city which is protected and isolated, and they are trying on searching the cure for this inconvenience. A hostile guy lives in the city and his pain level is super high.
There are also people who chose not to take the vaccine so they could live a regular life.
I saw this on tv many years ago.