Beginning the saga of the Evolutionary Wars. It's a strange alliance when X-Factor travels to the Mole Man's underground kingdom of Subterranea to save the Subterraneans from genetic transfiguration at the hands of the High Evolutionary! Also: Uncover the secret past of the High Evolutionary. Who shaped his beliefs? What was his connection with the father of the original Spider-Woman? You won't believe your eyes when you see the first Genetic Accelerator!