The last humans were well hidden in the underground cities and bunkers while on surface the war started. Mutants and biotechs fight each other till elimination. The first destroyed the machines using their extra powers and abilities. Machines were unable to manipulate and control elements, like fire, wind and toxic radiation who melt their circuits. They need to expand their experiments and find out how the human and mutant brain evolved and worked. Search deeper. Create new generation of machines.
Special thanks to @marco_bjolfursonfor sending me a lot of photos to work with, thank you bro for being a part of the story!