The Pro-Life Movement and Greenpeace have formed an alliance which has become a powerful law enforcement agency. It is dedicated to handling crimes against all forms of life and the ecological environment, anywhere in the solar system. Taylor Lee, an agent for the organization, is sent on a routine assignment to Callisto, after mishandling a drugs investigation which resulted in a legal backlash on Earth. His assignment is to trace a young and inexperienced agent who has failed to report back to the PLGA headquarters. Lee finds himself up against the power of a mining corporation owned by the ruthless Sirus Jarrad. The corporation requires massive amounts of oxygen, and will stop at nothing to get it - not even genocide. Can Lee, with the help of new found friends, prevent the destruction of what appears to be an intelligent life form on Jupiter? And ultimately save the two woman he cares for: one employed by Jarrad, and the other forced into a life of prostitution by the company.