The Greatest Host — Ray Jay Perreault

The Mists have traveled and lived for a long time. Their only purpose is to find a suitable host and share their lives. The planet where their last host lived, was bombarded by poisonous meteorites and after losing many of their kind they were forced to abandon their hosts and escape. They traveled for a long time and finally found hosts that seemed suitable. Once they occupied the new hosts they found and ideal life and they recognized that they finally found the perfect host.