This second book of the "ARIEN" series continues the fictionalized narrative of a UFO/UAP craft drawn to the beacon signal that emanated from the Arecibo Radio Telescope in Arecibo, Puerto Rico, sent outbound on November 16, 1974. After the craft downing by the US Military, Major M. performs the autopsy of the Alien and discovers gills and hemocyanin as the blood's oxygen carrier, suggesting an aquatic life. The existential imperative begins with determining where the craft originated from. Was it from the Hercules Constellation, globular star cluster Messier 13, over 25,000 light years away... or somewhere much closer in our own solar system?