Transfiguration

The biological history of species change seems to indicate that evolution occurs, not in gradual change over eons, but in sudden, violent change in a short period of time. What exactly causes these changes is not known, but they seem to appear at times of great environmental stress.

In the near future, after a great pandemic wipes out much of the earth's human population, a further cataclysm occurs: an ice age begins.

Under the stress of this vast environmental change, new species of animals ...