A secret dark projects organization known as the and "Committee and " uncovers a cryptic message in the infamous Roswell crash and seeks to uncover its meaning. The Committee determines the aliens who built the craft are an endangered species, and that the Roswell craft was from the future. The Committee realizes hidden alien Earth colonies exist, and slave human hybrids created by the aliens live among humans. In a secret facility in the Rocky Mountains, Dr. Black and Mr. Nix experiment on government agents, physically transforming them into hybrid mimics, so they can infiltrate the hybrids and discover the locations of the alien colonies. Tomas Seventeen is the only agent of seventeen to survive the transformation. He must somehow integrate with these hybrids to locate a hidden colony, and find out what the alien's intentions are toward humanity, while avoiding discovery by aliens that he is human, or by US Military who mistake Tomas for a hybrid.